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Finding the Fourth Proportional to 62,407.75, 93,611.64 and 20,854.75

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Solution

The fourth proportional to 62,407.75, 93,611.64 and 20,854.75 is: 31,282.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,407.75 : 93,611.64 = 20,854.75 : x
  2. Step 2: Convert to fraction form
    62,407.75/93,611.64 = 20,854.75/x
  3. Step 3: Cross multiply
    62,407.75x = 93,611.64 × 20,854.75
  4. Step 4: Simplify right side
    62,407.75x = 1,952,247,349.29
  5. Step 5: Solve for x
    x = 1,952,247,349.29/62,407.75
  6. Step 6: Final answer
    x = 31,282.13

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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.