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Finding the Fourth Proportional to 53,354.65, 80,036.04 and 15,911.80

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Solution

The fourth proportional to 53,354.65, 80,036.04 and 15,911.80 is: 23,868.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,354.65 : 80,036.04 = 15,911.80 : x
  2. Step 2: Convert to fraction form
    53,354.65/80,036.04 = 15,911.80/x
  3. Step 3: Cross multiply
    53,354.65x = 80,036.04 × 15,911.80
  4. Step 4: Simplify right side
    53,354.65x = 1,273,517,461.27
  5. Step 5: Solve for x
    x = 1,273,517,461.27/53,354.65
  6. Step 6: Final answer
    x = 23,868.91

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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.