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Finding the Fourth Proportional to 402,891.90, 603,353.70 and 402,891.90

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Solution

The fourth proportional to 402,891.90, 603,353.70 and 402,891.90 is: 603,353.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,891.90 : 603,353.70 = 402,891.90 : x
  2. Step 2: Convert to fraction form
    402,891.90/603,353.70 = 402,891.90/x
  3. Step 3: Cross multiply
    402,891.90x = 603,353.70 × 402,891.90
  4. Step 4: Simplify right side
    402,891.90x = 243,086,318,565.03
  5. Step 5: Solve for x
    x = 243,086,318,565.03/402,891.90
  6. Step 6: Final answer
    x = 603,353.70

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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.