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Finding the Fourth Proportional to 283,553.10, 425,329.65 and 266,931.90

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Solution

The fourth proportional to 283,553.10, 425,329.65 and 266,931.90 is: 400,397.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,553.10 : 425,329.65 = 266,931.90 : x
  2. Step 2: Convert to fraction form
    283,553.10/425,329.65 = 266,931.90/x
  3. Step 3: Cross multiply
    283,553.10x = 425,329.65 × 266,931.90
  4. Step 4: Simplify right side
    283,553.10x = 113,534,051,600.84
  5. Step 5: Solve for x
    x = 113,534,051,600.84/283,553.10
  6. Step 6: Final answer
    x = 400,397.85

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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.