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Finding the Fourth Proportional to 70,014.78, 96,619.23 and 38,181.78

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Solution

The fourth proportional to 70,014.78, 96,619.23 and 38,181.78 is: 52,690.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,014.78 : 96,619.23 = 38,181.78 : x
  2. Step 2: Convert to fraction form
    70,014.78/96,619.23 = 38,181.78/x
  3. Step 3: Cross multiply
    70,014.78x = 96,619.23 × 38,181.78
  4. Step 4: Simplify right side
    70,014.78x = 3,689,094,183.63
  5. Step 5: Solve for x
    x = 3,689,094,183.63/70,014.78
  6. Step 6: Final answer
    x = 52,690.22

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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.