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Finding the Fourth Proportional to 144,647.20, 216,932.40 and 44,807.20

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Solution

The fourth proportional to 144,647.20, 216,932.40 and 44,807.20 is: 67,198.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,647.20 : 216,932.40 = 44,807.20 : x
  2. Step 2: Convert to fraction form
    144,647.20/216,932.40 = 44,807.20/x
  3. Step 3: Cross multiply
    144,647.20x = 216,932.40 × 44,807.20
  4. Step 4: Simplify right side
    144,647.20x = 9,720,133,433.28
  5. Step 5: Solve for x
    x = 9,720,133,433.28/144,647.20
  6. Step 6: Final answer
    x = 67,198.90

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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.