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Finding the Fourth Proportional to 90,292.22, 124,624 and 60,078.81

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Solution

The fourth proportional to 90,292.22, 124,624 and 60,078.81 is: 82,922.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,292.22 : 124,624 = 60,078.81 : x
  2. Step 2: Convert to fraction form
    90,292.22/124,624 = 60,078.81/x
  3. Step 3: Cross multiply
    90,292.22x = 124,624 × 60,078.81
  4. Step 4: Simplify right side
    90,292.22x = 7,487,261,617.44
  5. Step 5: Solve for x
    x = 7,487,261,617.44/90,292.22
  6. Step 6: Final answer
    x = 82,922.56

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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.