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Finding the Fourth Proportional to 52,644, 78,979.68 and 15,708

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Solution

The fourth proportional to 52,644, 78,979.68 and 15,708 is: 23,566.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,644 : 78,979.68 = 15,708 : x
  2. Step 2: Convert to fraction form
    52,644/78,979.68 = 15,708/x
  3. Step 3: Cross multiply
    52,644x = 78,979.68 × 15,708
  4. Step 4: Simplify right side
    52,644x = 1,240,612,813.44
  5. Step 5: Solve for x
    x = 1,240,612,813.44/52,644
  6. Step 6: Final answer
    x = 23,566.08

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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.