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Finding the Fourth Proportional to 70,888.21, 97,839.85 and 40,693.93

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Solution

The fourth proportional to 70,888.21, 97,839.85 and 40,693.93 is: 56,165.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,888.21 : 97,839.85 = 40,693.93 : x
  2. Step 2: Convert to fraction form
    70,888.21/97,839.85 = 40,693.93/x
  3. Step 3: Cross multiply
    70,888.21x = 97,839.85 × 40,693.93
  4. Step 4: Simplify right side
    70,888.21x = 3,981,488,007.11
  5. Step 5: Solve for x
    x = 3,981,488,007.11/70,888.21
  6. Step 6: Final answer
    x = 56,165.73

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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.