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Finding the Fourth Proportional to 70,765.98, 97,658.36 and 38,934.19

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Solution

The fourth proportional to 70,765.98, 97,658.36 and 38,934.19 is: 53,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,765.98 : 97,658.36 = 38,934.19 : x
  2. Step 2: Convert to fraction form
    70,765.98/97,658.36 = 38,934.19/x
  3. Step 3: Cross multiply
    70,765.98x = 97,658.36 × 38,934.19
  4. Step 4: Simplify right side
    70,765.98x = 3,802,249,143.33
  5. Step 5: Solve for x
    x = 3,802,249,143.33/70,765.98
  6. Step 6: Final answer
    x = 53,729.90

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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.