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Finding the Fourth Proportional to 59,916.80, 89,716.80 and 48,015.20

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Solution

The fourth proportional to 59,916.80, 89,716.80 and 48,015.20 is: 71,895.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,916.80 : 89,716.80 = 48,015.20 : x
  2. Step 2: Convert to fraction form
    59,916.80/89,716.80 = 48,015.20/x
  3. Step 3: Cross multiply
    59,916.80x = 89,716.80 × 48,015.20
  4. Step 4: Simplify right side
    59,916.80x = 4,307,770,095.36
  5. Step 5: Solve for x
    x = 4,307,770,095.36/59,916.80
  6. Step 6: Final answer
    x = 71,895.86

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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.