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Finding the Fourth Proportional to 98,757.73, 148,103.70 and 42,562.75

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Solution

The fourth proportional to 98,757.73, 148,103.70 and 42,562.75 is: 63,829.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,757.73 : 148,103.70 = 42,562.75 : x
  2. Step 2: Convert to fraction form
    98,757.73/148,103.70 = 42,562.75/x
  3. Step 3: Cross multiply
    98,757.73x = 148,103.70 × 42,562.75
  4. Step 4: Simplify right side
    98,757.73x = 6,303,700,757.18
  5. Step 5: Solve for x
    x = 6,303,700,757.18/98,757.73
  6. Step 6: Final answer
    x = 63,829.95

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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.