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Finding the Fourth Proportional to 61,973.20, 92,959.80 and 56,432.80

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Solution

The fourth proportional to 61,973.20, 92,959.80 and 56,432.80 is: 84,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,973.20 : 92,959.80 = 56,432.80 : x
  2. Step 2: Convert to fraction form
    61,973.20/92,959.80 = 56,432.80/x
  3. Step 3: Cross multiply
    61,973.20x = 92,959.80 × 56,432.80
  4. Step 4: Simplify right side
    61,973.20x = 5,245,981,801.44
  5. Step 5: Solve for x
    x = 5,245,981,801.44/61,973.20
  6. Step 6: Final answer
    x = 84,649.20

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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.