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Finding the Fourth Proportional to 691,134.98, 953,650.64 and 385,144.28

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Solution

The fourth proportional to 691,134.98, 953,650.64 and 385,144.28 is: 531,434.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,134.98 : 953,650.64 = 385,144.28 : x
  2. Step 2: Convert to fraction form
    691,134.98/953,650.64 = 385,144.28/x
  3. Step 3: Cross multiply
    691,134.98x = 953,650.64 × 385,144.28
  4. Step 4: Simplify right side
    691,134.98x = 367,293,089,114.34
  5. Step 5: Solve for x
    x = 367,293,089,114.34/691,134.98
  6. Step 6: Final answer
    x = 531,434.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.