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Finding the Fourth Proportional to 73,597.13, 110,396.78 and 21,006.65

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Solution

The fourth proportional to 73,597.13, 110,396.78 and 21,006.65 is: 31,510.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,597.13 : 110,396.78 = 21,006.65 : x
  2. Step 2: Convert to fraction form
    73,597.13/110,396.78 = 21,006.65/x
  3. Step 3: Cross multiply
    73,597.13x = 110,396.78 × 21,006.65
  4. Step 4: Simplify right side
    73,597.13x = 2,319,065,861.57
  5. Step 5: Solve for x
    x = 2,319,065,861.57/73,597.13
  6. Step 6: Final answer
    x = 31,510.28

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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.