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Finding the Fourth Proportional to 90,522.92, 124,839.87 and 56,534.51

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Solution

The fourth proportional to 90,522.92, 124,839.87 and 56,534.51 is: 77,966.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,522.92 : 124,839.87 = 56,534.51 : x
  2. Step 2: Convert to fraction form
    90,522.92/124,839.87 = 56,534.51/x
  3. Step 3: Cross multiply
    90,522.92x = 124,839.87 × 56,534.51
  4. Step 4: Simplify right side
    90,522.92x = 7,057,760,254.71
  5. Step 5: Solve for x
    x = 7,057,760,254.71/90,522.92
  6. Step 6: Final answer
    x = 77,966.56

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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.