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Finding the Fourth Proportional to 70,281.20, 105,421.70 and 22,896.20

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Solution

The fourth proportional to 70,281.20, 105,421.70 and 22,896.20 is: 34,344.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,281.20 : 105,421.70 = 22,896.20 : x
  2. Step 2: Convert to fraction form
    70,281.20/105,421.70 = 22,896.20/x
  3. Step 3: Cross multiply
    70,281.20x = 105,421.70 × 22,896.20
  4. Step 4: Simplify right side
    70,281.20x = 2,413,755,685.95
  5. Step 5: Solve for x
    x = 2,413,755,685.95/70,281.20
  6. Step 6: Final answer
    x = 34,344.26

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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.