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Finding the Fourth Proportional to 84,807.50, 127,225.92 and 28,648.02

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Solution

The fourth proportional to 84,807.50, 127,225.92 and 28,648.02 is: 42,976.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,807.50 : 127,225.92 = 28,648.02 : x
  2. Step 2: Convert to fraction form
    84,807.50/127,225.92 = 28,648.02/x
  3. Step 3: Cross multiply
    84,807.50x = 127,225.92 × 28,648.02
  4. Step 4: Simplify right side
    84,807.50x = 3,644,770,593.25
  5. Step 5: Solve for x
    x = 3,644,770,593.25/84,807.50
  6. Step 6: Final answer
    x = 42,976.98

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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.