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Finding the Fourth Proportional to 70,470.96, 97,247.89 and 40,255.68

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Solution

The fourth proportional to 70,470.96, 97,247.89 and 40,255.68 is: 55,551.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,470.96 : 97,247.89 = 40,255.68 : x
  2. Step 2: Convert to fraction form
    70,470.96/97,247.89 = 40,255.68/x
  3. Step 3: Cross multiply
    70,470.96x = 97,247.89 × 40,255.68
  4. Step 4: Simplify right side
    70,470.96x = 3,914,780,355.51
  5. Step 5: Solve for x
    x = 3,914,780,355.51/70,470.96
  6. Step 6: Final answer
    x = 55,551.68

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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.