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Finding the Fourth Proportional to 60,753.80, 91,057.80 and 31,156.40

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Solution

The fourth proportional to 60,753.80, 91,057.80 and 31,156.40 is: 46,697.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,753.80 : 91,057.80 = 31,156.40 : x
  2. Step 2: Convert to fraction form
    60,753.80/91,057.80 = 31,156.40/x
  3. Step 3: Cross multiply
    60,753.80x = 91,057.80 × 31,156.40
  4. Step 4: Simplify right side
    60,753.80x = 2,837,033,239.92
  5. Step 5: Solve for x
    x = 2,837,033,239.92/60,753.80
  6. Step 6: Final answer
    x = 46,697.21

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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.