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Finding the Fourth Proportional to 104,931.52, 144,808.56 and 57,187.95

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Solution

The fourth proportional to 104,931.52, 144,808.56 and 57,187.95 is: 78,921.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,931.52 : 144,808.56 = 57,187.95 : x
  2. Step 2: Convert to fraction form
    104,931.52/144,808.56 = 57,187.95/x
  3. Step 3: Cross multiply
    104,931.52x = 144,808.56 × 57,187.95
  4. Step 4: Simplify right side
    104,931.52x = 8,281,304,145.82
  5. Step 5: Solve for x
    x = 8,281,304,145.82/104,931.52
  6. Step 6: Final answer
    x = 78,921.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.