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Finding the Fourth Proportional to 48,798.90, 67,343.01 and 28,656

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Solution

The fourth proportional to 48,798.90, 67,343.01 and 28,656 is: 39,545.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,798.90 : 67,343.01 = 28,656 : x
  2. Step 2: Convert to fraction form
    48,798.90/67,343.01 = 28,656/x
  3. Step 3: Cross multiply
    48,798.90x = 67,343.01 × 28,656
  4. Step 4: Simplify right side
    48,798.90x = 1,929,781,294.56
  5. Step 5: Solve for x
    x = 1,929,781,294.56/48,798.90
  6. Step 6: Final answer
    x = 39,545.59

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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.