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Finding the Fourth Proportional to 62,115.90, 93,160.14 and 19,987.93

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Solution

The fourth proportional to 62,115.90, 93,160.14 and 19,987.93 is: 29,977.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,115.90 : 93,160.14 = 19,987.93 : x
  2. Step 2: Convert to fraction form
    62,115.90/93,160.14 = 19,987.93/x
  3. Step 3: Cross multiply
    62,115.90x = 93,160.14 × 19,987.93
  4. Step 4: Simplify right side
    62,115.90x = 1,862,078,357.11
  5. Step 5: Solve for x
    x = 1,862,078,357.11/62,115.90
  6. Step 6: Final answer
    x = 29,977.48

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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.