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Finding the Fourth Proportional to 127,578.78, 191,376.24 and 38,838.78

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Solution

The fourth proportional to 127,578.78, 191,376.24 and 38,838.78 is: 58,260.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,578.78 : 191,376.24 = 38,838.78 : x
  2. Step 2: Convert to fraction form
    127,578.78/191,376.24 = 38,838.78/x
  3. Step 3: Cross multiply
    127,578.78x = 191,376.24 × 38,838.78
  4. Step 4: Simplify right side
    127,578.78x = 7,432,819,682.59
  5. Step 5: Solve for x
    x = 7,432,819,682.59/127,578.78
  6. Step 6: Final answer
    x = 58,260.63

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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.