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Finding the Fourth Proportional to 98,577.20, 147,865.80 and 36,239.60

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Solution

The fourth proportional to 98,577.20, 147,865.80 and 36,239.60 is: 54,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,577.20 : 147,865.80 = 36,239.60 : x
  2. Step 2: Convert to fraction form
    98,577.20/147,865.80 = 36,239.60/x
  3. Step 3: Cross multiply
    98,577.20x = 147,865.80 × 36,239.60
  4. Step 4: Simplify right side
    98,577.20x = 5,358,597,445.68
  5. Step 5: Solve for x
    x = 5,358,597,445.68/98,577.20
  6. Step 6: Final answer
    x = 54,359.40

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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.