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Finding the Fourth Proportional to 62,489.81, 93,744.50 and 20,360.12

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Solution

The fourth proportional to 62,489.81, 93,744.50 and 20,360.12 is: 30,543.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,489.81 : 93,744.50 = 20,360.12 : x
  2. Step 2: Convert to fraction form
    62,489.81/93,744.50 = 20,360.12/x
  3. Step 3: Cross multiply
    62,489.81x = 93,744.50 × 20,360.12
  4. Step 4: Simplify right side
    62,489.81x = 1,908,648,698.82
  5. Step 5: Solve for x
    x = 1,908,648,698.82/62,489.81
  6. Step 6: Final answer
    x = 30,543.36

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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.