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Finding the Fourth Proportional to 70,389.28, 105,605.88 and 23,644.18

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Solution

The fourth proportional to 70,389.28, 105,605.88 and 23,644.18 is: 35,473.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,389.28 : 105,605.88 = 23,644.18 : x
  2. Step 2: Convert to fraction form
    70,389.28/105,605.88 = 23,644.18/x
  3. Step 3: Cross multiply
    70,389.28x = 105,605.88 × 23,644.18
  4. Step 4: Simplify right side
    70,389.28x = 2,496,964,435.78
  5. Step 5: Solve for x
    x = 2,496,964,435.78/70,389.28
  6. Step 6: Final answer
    x = 35,473.65

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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.