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Finding the Fourth Proportional to 71,616.39, 107,423.88 and 43,544.19

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Solution

The fourth proportional to 71,616.39, 107,423.88 and 43,544.19 is: 65,315.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,616.39 : 107,423.88 = 43,544.19 : x
  2. Step 2: Convert to fraction form
    71,616.39/107,423.88 = 43,544.19/x
  3. Step 3: Cross multiply
    71,616.39x = 107,423.88 × 43,544.19
  4. Step 4: Simplify right side
    71,616.39x = 4,677,685,841.26
  5. Step 5: Solve for x
    x = 4,677,685,841.26/71,616.39
  6. Step 6: Final answer
    x = 65,315.86

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1.5x scale

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.