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Finding the Fourth Proportional to 70,661.52, 97,513.30 and 38,396.38

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Solution

The fourth proportional to 70,661.52, 97,513.30 and 38,396.38 is: 52,987.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,661.52 : 97,513.30 = 38,396.38 : x
  2. Step 2: Convert to fraction form
    70,661.52/97,513.30 = 38,396.38/x
  3. Step 3: Cross multiply
    70,661.52x = 97,513.30 × 38,396.38
  4. Step 4: Simplify right side
    70,661.52x = 3,744,157,721.85
  5. Step 5: Solve for x
    x = 3,744,157,721.85/70,661.52
  6. Step 6: Final answer
    x = 52,987.22

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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.