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Finding the Fourth Proportional to 70,563.08, 105,801.66 and 29,988.76

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Solution

The fourth proportional to 70,563.08, 105,801.66 and 29,988.76 is: 44,964.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,563.08 : 105,801.66 = 29,988.76 : x
  2. Step 2: Convert to fraction form
    70,563.08/105,801.66 = 29,988.76/x
  3. Step 3: Cross multiply
    70,563.08x = 105,801.66 × 29,988.76
  4. Step 4: Simplify right side
    70,563.08x = 3,172,860,589.34
  5. Step 5: Solve for x
    x = 3,172,860,589.34/70,563.08
  6. Step 6: Final answer
    x = 44,964.88

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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.