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Finding the Fourth Proportional to 98,112.47, 147,193.30 and 38,928.60

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Solution

The fourth proportional to 98,112.47, 147,193.30 and 38,928.60 is: 58,402.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,112.47 : 147,193.30 = 38,928.60 : x
  2. Step 2: Convert to fraction form
    98,112.47/147,193.30 = 38,928.60/x
  3. Step 3: Cross multiply
    98,112.47x = 147,193.30 × 38,928.60
  4. Step 4: Simplify right side
    98,112.47x = 5,730,029,147.04
  5. Step 5: Solve for x
    x = 5,730,029,147.04/98,112.47
  6. Step 6: Final answer
    x = 58,402.66

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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.