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Finding the Fourth Proportional to 127,648.77, 191,480.36 and 38,905.17

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Solution

The fourth proportional to 127,648.77, 191,480.36 and 38,905.17 is: 58,359.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,648.77 : 191,480.36 = 38,905.17 : x
  2. Step 2: Convert to fraction form
    127,648.77/191,480.36 = 38,905.17/x
  3. Step 3: Cross multiply
    127,648.77x = 191,480.36 × 38,905.17
  4. Step 4: Simplify right side
    127,648.77x = 7,449,575,957.46
  5. Step 5: Solve for x
    x = 7,449,575,957.46/127,648.77
  6. Step 6: Final answer
    x = 58,359.95

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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.