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Finding the Fourth Proportional to 70,662.92, 97,509.15 and 40,441.31

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Solution

The fourth proportional to 70,662.92, 97,509.15 and 40,441.31 is: 55,805.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,662.92 : 97,509.15 = 40,441.31 : x
  2. Step 2: Convert to fraction form
    70,662.92/97,509.15 = 40,441.31/x
  3. Step 3: Cross multiply
    70,662.92x = 97,509.15 × 40,441.31
  4. Step 4: Simplify right side
    70,662.92x = 3,943,397,641.10
  5. Step 5: Solve for x
    x = 3,943,397,641.10/70,662.92
  6. Step 6: Final answer
    x = 55,805.76

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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.