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Finding the Fourth Proportional to 70,695.50, 97,560.39 and 38,863.70

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Solution

The fourth proportional to 70,695.50, 97,560.39 and 38,863.70 is: 53,632.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,695.50 : 97,560.39 = 38,863.70 : x
  2. Step 2: Convert to fraction form
    70,695.50/97,560.39 = 38,863.70/x
  3. Step 3: Cross multiply
    70,695.50x = 97,560.39 × 38,863.70
  4. Step 4: Simplify right side
    70,695.50x = 3,791,557,728.84
  5. Step 5: Solve for x
    x = 3,791,557,728.84/70,695.50
  6. Step 6: Final answer
    x = 53,632.24

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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.