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Finding the Fourth Proportional to 71,156.60, 106,619.70 and 44,814.20

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Solution

The fourth proportional to 71,156.60, 106,619.70 and 44,814.20 is: 67,148.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,156.60 : 106,619.70 = 44,814.20 : x
  2. Step 2: Convert to fraction form
    71,156.60/106,619.70 = 44,814.20/x
  3. Step 3: Cross multiply
    71,156.60x = 106,619.70 × 44,814.20
  4. Step 4: Simplify right side
    71,156.60x = 4,778,076,559.74
  5. Step 5: Solve for x
    x = 4,778,076,559.74/71,156.60
  6. Step 6: Final answer
    x = 67,148.75

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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.