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Finding the Fourth Proportional to 57,768, 79,715.52 and 32,616.96

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Solution

The fourth proportional to 57,768, 79,715.52 and 32,616.96 is: 45,008.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,768 : 79,715.52 = 32,616.96 : x
  2. Step 2: Convert to fraction form
    57,768/79,715.52 = 32,616.96/x
  3. Step 3: Cross multiply
    57,768x = 79,715.52 × 32,616.96
  4. Step 4: Simplify right side
    57,768x = 2,600,077,927.22
  5. Step 5: Solve for x
    x = 2,600,077,927.22/57,768
  6. Step 6: Final answer
    x = 45,008.97

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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.