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Finding the Fourth Proportional to 88,647.20, 132,938.40 and 29,484.80

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Solution

The fourth proportional to 88,647.20, 132,938.40 and 29,484.80 is: 44,216.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,647.20 : 132,938.40 = 29,484.80 : x
  2. Step 2: Convert to fraction form
    88,647.20/132,938.40 = 29,484.80/x
  3. Step 3: Cross multiply
    88,647.20x = 132,938.40 × 29,484.80
  4. Step 4: Simplify right side
    88,647.20x = 3,919,662,136.32
  5. Step 5: Solve for x
    x = 3,919,662,136.32/88,647.20
  6. Step 6: Final answer
    x = 44,216.42

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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.