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Finding the Fourth Proportional to 81,098.19, 111,904.41 and 45,283.62

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Solution

The fourth proportional to 81,098.19, 111,904.41 and 45,283.62 is: 62,485.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,098.19 : 111,904.41 = 45,283.62 : x
  2. Step 2: Convert to fraction form
    81,098.19/111,904.41 = 45,283.62/x
  3. Step 3: Cross multiply
    81,098.19x = 111,904.41 × 45,283.62
  4. Step 4: Simplify right side
    81,098.19x = 5,067,436,778.76
  5. Step 5: Solve for x
    x = 5,067,436,778.76/81,098.19
  6. Step 6: Final answer
    x = 62,485.20

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1.5x scale

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.