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Finding the Fourth Proportional to 90,920.85, 125,491.17 and 59,034.39

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Solution

The fourth proportional to 90,920.85, 125,491.17 and 59,034.39 is: 81,480.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,920.85 : 125,491.17 = 59,034.39 : x
  2. Step 2: Convert to fraction form
    90,920.85/125,491.17 = 59,034.39/x
  3. Step 3: Cross multiply
    90,920.85x = 125,491.17 × 59,034.39
  4. Step 4: Simplify right side
    90,920.85x = 7,408,294,671.34
  5. Step 5: Solve for x
    x = 7,408,294,671.34/90,920.85
  6. Step 6: Final answer
    x = 81,480.70

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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.