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Finding the Fourth Proportional to 70,186.56, 96,856.84 and 38,354.88

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Solution

The fourth proportional to 70,186.56, 96,856.84 and 38,354.88 is: 52,929.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,186.56 : 96,856.84 = 38,354.88 : x
  2. Step 2: Convert to fraction form
    70,186.56/96,856.84 = 38,354.88/x
  3. Step 3: Cross multiply
    70,186.56x = 96,856.84 × 38,354.88
  4. Step 4: Simplify right side
    70,186.56x = 3,714,932,475.38
  5. Step 5: Solve for x
    x = 3,714,932,475.38/70,186.56
  6. Step 6: Final answer
    x = 52,929.40

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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.