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Finding the Fourth Proportional to 104,712.80, 157,069.20 and 64,854.73

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Solution

The fourth proportional to 104,712.80, 157,069.20 and 64,854.73 is: 97,282.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,712.80 : 157,069.20 = 64,854.73 : x
  2. Step 2: Convert to fraction form
    104,712.80/157,069.20 = 64,854.73/x
  3. Step 3: Cross multiply
    104,712.80x = 157,069.20 × 64,854.73
  4. Step 4: Simplify right side
    104,712.80x = 10,186,680,557.32
  5. Step 5: Solve for x
    x = 10,186,680,557.32/104,712.80
  6. Step 6: Final answer
    x = 97,282.10

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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.