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Finding the Fourth Proportional to 127,915.38, 191,873.54 and 39,168.53

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Solution

The fourth proportional to 127,915.38, 191,873.54 and 39,168.53 is: 58,752.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,915.38 : 191,873.54 = 39,168.53 : x
  2. Step 2: Convert to fraction form
    127,915.38/191,873.54 = 39,168.53/x
  3. Step 3: Cross multiply
    127,915.38x = 191,873.54 × 39,168.53
  4. Step 4: Simplify right side
    127,915.38x = 7,515,403,352.49
  5. Step 5: Solve for x
    x = 7,515,403,352.49/127,915.38
  6. Step 6: Final answer
    x = 58,752.93

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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.