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Finding the Fourth Proportional to 62,480.80, 93,721.20 and 57,669.40

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Solution

The fourth proportional to 62,480.80, 93,721.20 and 57,669.40 is: 86,504.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,480.80 : 93,721.20 = 57,669.40 : x
  2. Step 2: Convert to fraction form
    62,480.80/93,721.20 = 57,669.40/x
  3. Step 3: Cross multiply
    62,480.80x = 93,721.20 × 57,669.40
  4. Step 4: Simplify right side
    62,480.80x = 5,404,845,371.28
  5. Step 5: Solve for x
    x = 5,404,845,371.28/62,480.80
  6. Step 6: Final answer
    x = 86,504.10

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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.