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Finding the Fourth Proportional to 92,768.20, 128,020.14 and 52,481.08

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Solution

The fourth proportional to 92,768.20, 128,020.14 and 52,481.08 is: 72,423.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,768.20 : 128,020.14 = 52,481.08 : x
  2. Step 2: Convert to fraction form
    92,768.20/128,020.14 = 52,481.08/x
  3. Step 3: Cross multiply
    92,768.20x = 128,020.14 × 52,481.08
  4. Step 4: Simplify right side
    92,768.20x = 6,718,635,208.95
  5. Step 5: Solve for x
    x = 6,718,635,208.95/92,768.20
  6. Step 6: Final answer
    x = 72,423.90

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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.