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Finding the Fourth Proportional to 67,193.96, 92,728.88 and 36,979

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Solution

The fourth proportional to 67,193.96, 92,728.88 and 36,979 is: 51,031.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,193.96 : 92,728.88 = 36,979 : x
  2. Step 2: Convert to fraction form
    67,193.96/92,728.88 = 36,979/x
  3. Step 3: Cross multiply
    67,193.96x = 92,728.88 × 36,979
  4. Step 4: Simplify right side
    67,193.96x = 3,429,021,253.52
  5. Step 5: Solve for x
    x = 3,429,021,253.52/67,193.96
  6. Step 6: Final answer
    x = 51,031.69

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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.