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Finding the Fourth Proportional to 98,365.47, 147,619.28 and 39,167.02

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Solution

The fourth proportional to 98,365.47, 147,619.28 and 39,167.02 is: 58,778.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,365.47 : 147,619.28 = 39,167.02 : x
  2. Step 2: Convert to fraction form
    98,365.47/147,619.28 = 39,167.02/x
  3. Step 3: Cross multiply
    98,365.47x = 147,619.28 × 39,167.02
  4. Step 4: Simplify right side
    98,365.47x = 5,781,807,292.15
  5. Step 5: Solve for x
    x = 5,781,807,292.15/98,365.47
  6. Step 6: Final answer
    x = 58,778.83

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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.