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Finding the Fourth Proportional to 73,848.20, 101,909.20 and 42,016.40

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Solution

The fourth proportional to 73,848.20, 101,909.20 and 42,016.40 is: 57,981.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,848.20 : 101,909.20 = 42,016.40 : x
  2. Step 2: Convert to fraction form
    73,848.20/101,909.20 = 42,016.40/x
  3. Step 3: Cross multiply
    73,848.20x = 101,909.20 × 42,016.40
  4. Step 4: Simplify right side
    73,848.20x = 4,281,857,710.88
  5. Step 5: Solve for x
    x = 4,281,857,710.88/73,848.20
  6. Step 6: Final answer
    x = 57,981.88

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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.