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Finding the Fourth Proportional to 55,277.80, 82,916.70 and 40,244.20

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Solution

The fourth proportional to 55,277.80, 82,916.70 and 40,244.20 is: 60,366.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,277.80 : 82,916.70 = 40,244.20 : x
  2. Step 2: Convert to fraction form
    55,277.80/82,916.70 = 40,244.20/x
  3. Step 3: Cross multiply
    55,277.80x = 82,916.70 × 40,244.20
  4. Step 4: Simplify right side
    55,277.80x = 3,336,916,258.14
  5. Step 5: Solve for x
    x = 3,336,916,258.14/55,277.80
  6. Step 6: Final answer
    x = 60,366.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.