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Finding the Fourth Proportional to 62,487.57, 93,741.11 and 20,357.87

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Solution

The fourth proportional to 62,487.57, 93,741.11 and 20,357.87 is: 30,539.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,487.57 : 93,741.11 = 20,357.87 : x
  2. Step 2: Convert to fraction form
    62,487.57/93,741.11 = 20,357.87/x
  3. Step 3: Cross multiply
    62,487.57x = 93,741.11 × 20,357.87
  4. Step 4: Simplify right side
    62,487.57x = 1,908,369,028.79
  5. Step 5: Solve for x
    x = 1,908,369,028.79/62,487.57
  6. Step 6: Final answer
    x = 30,539.98

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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.