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Finding the Fourth Proportional to 70,642.92, 97,493.22 and 38,818.20

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Solution

The fourth proportional to 70,642.92, 97,493.22 and 38,818.20 is: 53,572.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,642.92 : 97,493.22 = 38,818.20 : x
  2. Step 2: Convert to fraction form
    70,642.92/97,493.22 = 38,818.20/x
  3. Step 3: Cross multiply
    70,642.92x = 97,493.22 × 38,818.20
  4. Step 4: Simplify right side
    70,642.92x = 3,784,511,312.60
  5. Step 5: Solve for x
    x = 3,784,511,312.60/70,642.92
  6. Step 6: Final answer
    x = 53,572.41

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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.