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Finding the Fourth Proportional to 70,851.75, 97,766.91 and 40,635.51

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Solution

The fourth proportional to 70,851.75, 97,766.91 and 40,635.51 is: 56,072.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,851.75 : 97,766.91 = 40,635.51 : x
  2. Step 2: Convert to fraction form
    70,851.75/97,766.91 = 40,635.51/x
  3. Step 3: Cross multiply
    70,851.75x = 97,766.91 × 40,635.51
  4. Step 4: Simplify right side
    70,851.75x = 3,972,808,248.97
  5. Step 5: Solve for x
    x = 3,972,808,248.97/70,851.75
  6. Step 6: Final answer
    x = 56,072.13

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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.