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Finding the Fourth Proportional to 83,497.76, 124,788.20 and 61,055.70

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Solution

The fourth proportional to 83,497.76, 124,788.20 and 61,055.70 is: 91,248.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,497.76 : 124,788.20 = 61,055.70 : x
  2. Step 2: Convert to fraction form
    83,497.76/124,788.20 = 61,055.70/x
  3. Step 3: Cross multiply
    83,497.76x = 124,788.20 × 61,055.70
  4. Step 4: Simplify right side
    83,497.76x = 7,619,030,597.46
  5. Step 5: Solve for x
    x = 7,619,030,597.46/83,497.76
  6. Step 6: Final answer
    x = 91,248.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.