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Finding the Fourth Proportional to 89,874.58, 124,071.87 and 55,894.02

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Solution

The fourth proportional to 89,874.58, 124,071.87 and 55,894.02 is: 77,161.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,874.58 : 124,071.87 = 55,894.02 : x
  2. Step 2: Convert to fraction form
    89,874.58/124,071.87 = 55,894.02/x
  3. Step 3: Cross multiply
    89,874.58x = 124,071.87 × 55,894.02
  4. Step 4: Simplify right side
    89,874.58x = 6,934,875,013.15
  5. Step 5: Solve for x
    x = 6,934,875,013.15/89,874.58
  6. Step 6: Final answer
    x = 77,161.69

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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.