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Finding the Fourth Proportional to 52,718.76, 79,078.19 and 21,554.01

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Solution

The fourth proportional to 52,718.76, 79,078.19 and 21,554.01 is: 32,331.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,718.76 : 79,078.19 = 21,554.01 : x
  2. Step 2: Convert to fraction form
    52,718.76/79,078.19 = 21,554.01/x
  3. Step 3: Cross multiply
    52,718.76x = 79,078.19 × 21,554.01
  4. Step 4: Simplify right side
    52,718.76x = 1,704,452,098.04
  5. Step 5: Solve for x
    x = 1,704,452,098.04/52,718.76
  6. Step 6: Final answer
    x = 32,331.04

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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.