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Finding the Fourth Proportional to 70,396.72, 97,144.98 and 38,565.32

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Solution

The fourth proportional to 70,396.72, 97,144.98 and 38,565.32 is: 53,218.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,396.72 : 97,144.98 = 38,565.32 : x
  2. Step 2: Convert to fraction form
    70,396.72/97,144.98 = 38,565.32/x
  3. Step 3: Cross multiply
    70,396.72x = 97,144.98 × 38,565.32
  4. Step 4: Simplify right side
    70,396.72x = 3,746,427,240.09
  5. Step 5: Solve for x
    x = 3,746,427,240.09/70,396.72
  6. Step 6: Final answer
    x = 53,218.78

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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.