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Finding the Fourth Proportional to 71,894.54, 99,186.18 and 48,036.80

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Solution

The fourth proportional to 71,894.54, 99,186.18 and 48,036.80 is: 66,271.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,894.54 : 99,186.18 = 48,036.80 : x
  2. Step 2: Convert to fraction form
    71,894.54/99,186.18 = 48,036.80/x
  3. Step 3: Cross multiply
    71,894.54x = 99,186.18 × 48,036.80
  4. Step 4: Simplify right side
    71,894.54x = 4,764,586,691.42
  5. Step 5: Solve for x
    x = 4,764,586,691.42/71,894.54
  6. Step 6: Final answer
    x = 66,271.89

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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.