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Finding the Fourth Proportional to 581,109.60, 871,664.40 and 206,997.60

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Solution

The fourth proportional to 581,109.60, 871,664.40 and 206,997.60 is: 310,496.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,109.60 : 871,664.40 = 206,997.60 : x
  2. Step 2: Convert to fraction form
    581,109.60/871,664.40 = 206,997.60/x
  3. Step 3: Cross multiply
    581,109.60x = 871,664.40 × 206,997.60
  4. Step 4: Simplify right side
    581,109.60x = 180,432,438,805.44
  5. Step 5: Solve for x
    x = 180,432,438,805.44/581,109.60
  6. Step 6: Final answer
    x = 310,496.40

Related Problems

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Half scale
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Double scale
Find fourth proportional to 581,110.60, 871,665.90 and 206,998.60
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.