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Finding the Fourth Proportional to 57,357.65, 79,158.91 and 34,702.21

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Solution

The fourth proportional to 57,357.65, 79,158.91 and 34,702.21 is: 47,892.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,357.65 : 79,158.91 = 34,702.21 : x
  2. Step 2: Convert to fraction form
    57,357.65/79,158.91 = 34,702.21/x
  3. Step 3: Cross multiply
    57,357.65x = 79,158.91 × 34,702.21
  4. Step 4: Simplify right side
    57,357.65x = 2,746,988,833.54
  5. Step 5: Solve for x
    x = 2,746,988,833.54/57,357.65
  6. Step 6: Final answer
    x = 47,892.28

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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.