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Finding the Fourth Proportional to 38,822.80, 58,219.80 and 15,444.40

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Solution

The fourth proportional to 38,822.80, 58,219.80 and 15,444.40 is: 23,160.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,822.80 : 58,219.80 = 15,444.40 : x
  2. Step 2: Convert to fraction form
    38,822.80/58,219.80 = 15,444.40/x
  3. Step 3: Cross multiply
    38,822.80x = 58,219.80 × 15,444.40
  4. Step 4: Simplify right side
    38,822.80x = 899,169,879.12
  5. Step 5: Solve for x
    x = 899,169,879.12/38,822.80
  6. Step 6: Final answer
    x = 23,160.87

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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.