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Finding the Fourth Proportional to 691,223.29, 953,892.50 and 385,319.11

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Solution

The fourth proportional to 691,223.29, 953,892.50 and 385,319.11 is: 531,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,223.29 : 953,892.50 = 385,319.11 : x
  2. Step 2: Convert to fraction form
    691,223.29/953,892.50 = 385,319.11/x
  3. Step 3: Cross multiply
    691,223.29x = 953,892.50 × 385,319.11
  4. Step 4: Simplify right side
    691,223.29x = 367,553,009,135.68
  5. Step 5: Solve for x
    x = 367,553,009,135.68/691,223.29
  6. Step 6: Final answer
    x = 531,742.80

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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.