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Finding the Fourth Proportional to 90,495.68, 124,895.12 and 52,255.13

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Solution

The fourth proportional to 90,495.68, 124,895.12 and 52,255.13 is: 72,118.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,495.68 : 124,895.12 = 52,255.13 : x
  2. Step 2: Convert to fraction form
    90,495.68/124,895.12 = 52,255.13/x
  3. Step 3: Cross multiply
    90,495.68x = 124,895.12 × 52,255.13
  4. Step 4: Simplify right side
    90,495.68x = 6,526,410,731.97
  5. Step 5: Solve for x
    x = 6,526,410,731.97/90,495.68
  6. Step 6: Final answer
    x = 72,118.48

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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.