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Finding the Fourth Proportional to 92,480.88, 138,718.08 and 25,920.48

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Solution

The fourth proportional to 92,480.88, 138,718.08 and 25,920.48 is: 38,879.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,480.88 : 138,718.08 = 25,920.48 : x
  2. Step 2: Convert to fraction form
    92,480.88/138,718.08 = 25,920.48/x
  3. Step 3: Cross multiply
    92,480.88x = 138,718.08 × 25,920.48
  4. Step 4: Simplify right side
    92,480.88x = 3,595,639,218.28
  5. Step 5: Solve for x
    x = 3,595,639,218.28/92,480.88
  6. Step 6: Final answer
    x = 38,879.81

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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.