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Finding the Fourth Proportional to 70,848.60, 97,770.42 and 39,016.82

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Solution

The fourth proportional to 70,848.60, 97,770.42 and 39,016.82 is: 53,842.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,848.60 : 97,770.42 = 39,016.82 : x
  2. Step 2: Convert to fraction form
    70,848.60/97,770.42 = 39,016.82/x
  3. Step 3: Cross multiply
    70,848.60x = 97,770.42 × 39,016.82
  4. Step 4: Simplify right side
    70,848.60x = 3,814,690,389.61
  5. Step 5: Solve for x
    x = 3,814,690,389.61/70,848.60
  6. Step 6: Final answer
    x = 53,842.85

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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.