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Finding the Fourth Proportional to 70,758.58, 97,645.80 and 38,925.58

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Solution

The fourth proportional to 70,758.58, 97,645.80 and 38,925.58 is: 53,716.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,758.58 : 97,645.80 = 38,925.58 : x
  2. Step 2: Convert to fraction form
    70,758.58/97,645.80 = 38,925.58/x
  3. Step 3: Cross multiply
    70,758.58x = 97,645.80 × 38,925.58
  4. Step 4: Simplify right side
    70,758.58x = 3,800,919,399.56
  5. Step 5: Solve for x
    x = 3,800,919,399.56/70,758.58
  6. Step 6: Final answer
    x = 53,716.73

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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.