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Finding the Fourth Proportional to 127,995, 176,633.10 and 71,406.36

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Solution

The fourth proportional to 127,995, 176,633.10 and 71,406.36 is: 98,540.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,995 : 176,633.10 = 71,406.36 : x
  2. Step 2: Convert to fraction form
    127,995/176,633.10 = 71,406.36/x
  3. Step 3: Cross multiply
    127,995x = 176,633.10 × 71,406.36
  4. Step 4: Simplify right side
    127,995x = 12,612,726,726.52
  5. Step 5: Solve for x
    x = 12,612,726,726.52/127,995
  6. Step 6: Final answer
    x = 98,540.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.