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Finding the Fourth Proportional to 70,941.80, 106,266.90 and 48,780.20

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Solution

The fourth proportional to 70,941.80, 106,266.90 and 48,780.20 is: 73,070.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,941.80 : 106,266.90 = 48,780.20 : x
  2. Step 2: Convert to fraction form
    70,941.80/106,266.90 = 48,780.20/x
  3. Step 3: Cross multiply
    70,941.80x = 106,266.90 × 48,780.20
  4. Step 4: Simplify right side
    70,941.80x = 5,183,720,635.38
  5. Step 5: Solve for x
    x = 5,183,720,635.38/70,941.80
  6. Step 6: Final answer
    x = 73,070.05

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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.