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Finding the Fourth Proportional to 70,689.52, 97,548.60 and 38,855.44

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Solution

The fourth proportional to 70,689.52, 97,548.60 and 38,855.44 is: 53,618.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,689.52 : 97,548.60 = 38,855.44 : x
  2. Step 2: Convert to fraction form
    70,689.52/97,548.60 = 38,855.44/x
  3. Step 3: Cross multiply
    70,689.52x = 97,548.60 × 38,855.44
  4. Step 4: Simplify right side
    70,689.52x = 3,790,293,774.38
  5. Step 5: Solve for x
    x = 3,790,293,774.38/70,689.52
  6. Step 6: Final answer
    x = 53,618.89

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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.