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Finding the Fourth Proportional to 70,910.03, 97,855.88 and 38,644.66

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Solution

The fourth proportional to 70,910.03, 97,855.88 and 38,644.66 is: 53,329.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,910.03 : 97,855.88 = 38,644.66 : x
  2. Step 2: Convert to fraction form
    70,910.03/97,855.88 = 38,644.66/x
  3. Step 3: Cross multiply
    70,910.03x = 97,855.88 × 38,644.66
  4. Step 4: Simplify right side
    70,910.03x = 3,781,607,018.38
  5. Step 5: Solve for x
    x = 3,781,607,018.38/70,910.03
  6. Step 6: Final answer
    x = 53,329.65

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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.