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Finding the Fourth Proportional to 62,484.70, 93,727.05 and 20,931.70

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Solution

The fourth proportional to 62,484.70, 93,727.05 and 20,931.70 is: 31,397.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,484.70 : 93,727.05 = 20,931.70 : x
  2. Step 2: Convert to fraction form
    62,484.70/93,727.05 = 20,931.70/x
  3. Step 3: Cross multiply
    62,484.70x = 93,727.05 × 20,931.70
  4. Step 4: Simplify right side
    62,484.70x = 1,961,866,492.49
  5. Step 5: Solve for x
    x = 1,961,866,492.49/62,484.70
  6. Step 6: Final answer
    x = 31,397.55

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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.