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Finding the Fourth Proportional to 91,081.26, 125,649.24 and 59,238.54

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Solution

The fourth proportional to 91,081.26, 125,649.24 and 59,238.54 is: 81,721.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,081.26 : 125,649.24 = 59,238.54 : x
  2. Step 2: Convert to fraction form
    91,081.26/125,649.24 = 59,238.54/x
  3. Step 3: Cross multiply
    91,081.26x = 125,649.24 × 59,238.54
  4. Step 4: Simplify right side
    91,081.26x = 7,443,277,529.71
  5. Step 5: Solve for x
    x = 7,443,277,529.71/91,081.26
  6. Step 6: Final answer
    x = 81,721.28

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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.