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Finding the Fourth Proportional to 71,715.40, 107,573.10 and 60,310.60

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Solution

The fourth proportional to 71,715.40, 107,573.10 and 60,310.60 is: 90,465.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,715.40 : 107,573.10 = 60,310.60 : x
  2. Step 2: Convert to fraction form
    71,715.40/107,573.10 = 60,310.60/x
  3. Step 3: Cross multiply
    71,715.40x = 107,573.10 × 60,310.60
  4. Step 4: Simplify right side
    71,715.40x = 6,487,798,204.86
  5. Step 5: Solve for x
    x = 6,487,798,204.86/71,715.40
  6. Step 6: Final answer
    x = 90,465.90

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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.