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Finding the Fourth Proportional to 67,080, 92,531.88 and 41,885.76

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Solution

The fourth proportional to 67,080, 92,531.88 and 41,885.76 is: 57,778.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,080 : 92,531.88 = 41,885.76 : x
  2. Step 2: Convert to fraction form
    67,080/92,531.88 = 41,885.76/x
  3. Step 3: Cross multiply
    67,080x = 92,531.88 × 41,885.76
  4. Step 4: Simplify right side
    67,080x = 3,875,768,118.03
  5. Step 5: Solve for x
    x = 3,875,768,118.03/67,080
  6. Step 6: Final answer
    x = 57,778.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.