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Finding the Fourth Proportional to 275,657.10, 413,487.54 and 75,988.32

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Solution

The fourth proportional to 275,657.10, 413,487.54 and 75,988.32 is: 113,983.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,657.10 : 413,487.54 = 75,988.32 : x
  2. Step 2: Convert to fraction form
    275,657.10/413,487.54 = 75,988.32/x
  3. Step 3: Cross multiply
    275,657.10x = 413,487.54 × 75,988.32
  4. Step 4: Simplify right side
    275,657.10x = 31,420,223,505.53
  5. Step 5: Solve for x
    x = 31,420,223,505.53/275,657.10
  6. Step 6: Final answer
    x = 113,983.00

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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.