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Finding the Fourth Proportional to 135,061.20, 202,591.80 and 46,285.20

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Solution

The fourth proportional to 135,061.20, 202,591.80 and 46,285.20 is: 69,427.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,061.20 : 202,591.80 = 46,285.20 : x
  2. Step 2: Convert to fraction form
    135,061.20/202,591.80 = 46,285.20/x
  3. Step 3: Cross multiply
    135,061.20x = 202,591.80 × 46,285.20
  4. Step 4: Simplify right side
    135,061.20x = 9,377,001,981.36
  5. Step 5: Solve for x
    x = 9,377,001,981.36/135,061.20
  6. Step 6: Final answer
    x = 69,427.80

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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.