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Finding the Fourth Proportional to 98,551.60, 147,876.92 and 45,965.20

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Solution

The fourth proportional to 98,551.60, 147,876.92 and 45,965.20 is: 68,970.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,551.60 : 147,876.92 = 45,965.20 : x
  2. Step 2: Convert to fraction form
    98,551.60/147,876.92 = 45,965.20/x
  3. Step 3: Cross multiply
    98,551.60x = 147,876.92 × 45,965.20
  4. Step 4: Simplify right side
    98,551.60x = 6,797,192,203.18
  5. Step 5: Solve for x
    x = 6,797,192,203.18/98,551.60
  6. Step 6: Final answer
    x = 68,970.90

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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.