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Finding the Fourth Proportional to 639,089,998.90, 958,634,998.35 and 466,903,114.90

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Solution

The fourth proportional to 639,089,998.90, 958,634,998.35 and 466,903,114.90 is: 700,354,672.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,089,998.90 : 958,634,998.35 = 466,903,114.90 : x
  2. Step 2: Convert to fraction form
    639,089,998.90/958,634,998.35 = 466,903,114.90/x
  3. Step 3: Cross multiply
    639,089,998.90x = 958,634,998.35 × 466,903,114.90
  4. Step 4: Simplify right side
    639,089,998.90x = 447,589,666,781,771,328
  5. Step 5: Solve for x
    x = 447,589,666,781,771,328/639,089,998.90
  6. Step 6: Final answer
    x = 700,354,672.35

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Double scale
Find fourth proportional to 639,089,999.90, 958,634,999.85 and 466,903,115.90
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.