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Finding the Fourth Proportional to 115,915.30, 173,872.95 and 53,707.30

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Solution

The fourth proportional to 115,915.30, 173,872.95 and 53,707.30 is: 80,560.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,915.30 : 173,872.95 = 53,707.30 : x
  2. Step 2: Convert to fraction form
    115,915.30/173,872.95 = 53,707.30/x
  3. Step 3: Cross multiply
    115,915.30x = 173,872.95 × 53,707.30
  4. Step 4: Simplify right side
    115,915.30x = 9,338,246,687.54
  5. Step 5: Solve for x
    x = 9,338,246,687.54/115,915.30
  6. Step 6: Final answer
    x = 80,560.95

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1.5x scale

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.