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Finding the Fourth Proportional to 73,620.19, 110,437.95 and 20,312.17

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Solution

The fourth proportional to 73,620.19, 110,437.95 and 20,312.17 is: 30,470.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,620.19 : 110,437.95 = 20,312.17 : x
  2. Step 2: Convert to fraction form
    73,620.19/110,437.95 = 20,312.17/x
  3. Step 3: Cross multiply
    73,620.19x = 110,437.95 × 20,312.17
  4. Step 4: Simplify right side
    73,620.19x = 2,243,234,414.85
  5. Step 5: Solve for x
    x = 2,243,234,414.85/73,620.19
  6. Step 6: Final answer
    x = 30,470.37

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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.