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Finding the Fourth Proportional to 90,394.92, 124,729.68 and 60,225.24

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Solution

The fourth proportional to 90,394.92, 124,729.68 and 60,225.24 is: 83,100.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,394.92 : 124,729.68 = 60,225.24 : x
  2. Step 2: Convert to fraction form
    90,394.92/124,729.68 = 60,225.24/x
  3. Step 3: Cross multiply
    90,394.92x = 124,729.68 × 60,225.24
  4. Step 4: Simplify right side
    90,394.92x = 7,511,874,913.12
  5. Step 5: Solve for x
    x = 7,511,874,913.12/90,394.92
  6. Step 6: Final answer
    x = 83,100.63

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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.