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Finding the Fourth Proportional to 62,259.78, 93,390.48 and 20,706.78

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Solution

The fourth proportional to 62,259.78, 93,390.48 and 20,706.78 is: 31,060.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,259.78 : 93,390.48 = 20,706.78 : x
  2. Step 2: Convert to fraction form
    62,259.78/93,390.48 = 20,706.78/x
  3. Step 3: Cross multiply
    62,259.78x = 93,390.48 × 20,706.78
  4. Step 4: Simplify right side
    62,259.78x = 1,933,816,123.45
  5. Step 5: Solve for x
    x = 1,933,816,123.45/62,259.78
  6. Step 6: Final answer
    x = 31,060.44

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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.