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Finding the Fourth Proportional to 89,911.52, 124,077.28 and 49,625.28

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Solution

The fourth proportional to 89,911.52, 124,077.28 and 49,625.28 is: 68,482.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,911.52 : 124,077.28 = 49,625.28 : x
  2. Step 2: Convert to fraction form
    89,911.52/124,077.28 = 49,625.28/x
  3. Step 3: Cross multiply
    89,911.52x = 124,077.28 × 49,625.28
  4. Step 4: Simplify right side
    89,911.52x = 6,157,369,761.64
  5. Step 5: Solve for x
    x = 6,157,369,761.64/89,911.52
  6. Step 6: Final answer
    x = 68,482.55

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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.