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Finding the Fourth Proportional to 98,869.60, 148,320.56 and 32,290.40

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Solution

The fourth proportional to 98,869.60, 148,320.56 and 32,290.40 is: 48,440.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,869.60 : 148,320.56 = 32,290.40 : x
  2. Step 2: Convert to fraction form
    98,869.60/148,320.56 = 32,290.40/x
  3. Step 3: Cross multiply
    98,869.60x = 148,320.56 × 32,290.40
  4. Step 4: Simplify right side
    98,869.60x = 4,789,330,210.62
  5. Step 5: Solve for x
    x = 4,789,330,210.62/98,869.60
  6. Step 6: Final answer
    x = 48,440.88

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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.