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Finding the Fourth Proportional to 89,894.90, 124,055.49 and 49,609.70

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Solution

The fourth proportional to 89,894.90, 124,055.49 and 49,609.70 is: 68,461.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,894.90 : 124,055.49 = 49,609.70 : x
  2. Step 2: Convert to fraction form
    89,894.90/124,055.49 = 49,609.70/x
  3. Step 3: Cross multiply
    89,894.90x = 124,055.49 × 49,609.70
  4. Step 4: Simplify right side
    89,894.90x = 6,154,355,642.25
  5. Step 5: Solve for x
    x = 6,154,355,642.25/89,894.90
  6. Step 6: Final answer
    x = 68,461.68

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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.