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Finding the Fourth Proportional to 76,158.20, 105,098.40 and 42,624.20

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Solution

The fourth proportional to 76,158.20, 105,098.40 and 42,624.20 is: 58,821.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,158.20 : 105,098.40 = 42,624.20 : x
  2. Step 2: Convert to fraction form
    76,158.20/105,098.40 = 42,624.20/x
  3. Step 3: Cross multiply
    76,158.20x = 105,098.40 × 42,624.20
  4. Step 4: Simplify right side
    76,158.20x = 4,479,734,695.79
  5. Step 5: Solve for x
    x = 4,479,734,695.79/76,158.20
  6. Step 6: Final answer
    x = 58,821.44

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