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Finding the Fourth Proportional to 56,491.56, 84,765.18 and 39,957.84

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Solution

The fourth proportional to 56,491.56, 84,765.18 and 39,957.84 is: 59,956.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,491.56 : 84,765.18 = 39,957.84 : x
  2. Step 2: Convert to fraction form
    56,491.56/84,765.18 = 39,957.84/x
  3. Step 3: Cross multiply
    56,491.56x = 84,765.18 × 39,957.84
  4. Step 4: Simplify right side
    56,491.56x = 3,387,033,500.01
  5. Step 5: Solve for x
    x = 3,387,033,500.01/56,491.56
  6. Step 6: Final answer
    x = 59,956.45

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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.