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Finding the Fourth Proportional to 68,909.40, 103,364.10 and 33,841.80

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Solution

The fourth proportional to 68,909.40, 103,364.10 and 33,841.80 is: 50,762.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,909.40 : 103,364.10 = 33,841.80 : x
  2. Step 2: Convert to fraction form
    68,909.40/103,364.10 = 33,841.80/x
  3. Step 3: Cross multiply
    68,909.40x = 103,364.10 × 33,841.80
  4. Step 4: Simplify right side
    68,909.40x = 3,498,027,199.38
  5. Step 5: Solve for x
    x = 3,498,027,199.38/68,909.40
  6. Step 6: Final answer
    x = 50,762.70

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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.