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Finding the Fourth Proportional to 70,459.87, 97,235.42 and 40,249.18

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Solution

The fourth proportional to 70,459.87, 97,235.42 and 40,249.18 is: 55,544.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,459.87 : 97,235.42 = 40,249.18 : x
  2. Step 2: Convert to fraction form
    70,459.87/97,235.42 = 40,249.18/x
  3. Step 3: Cross multiply
    70,459.87x = 97,235.42 × 40,249.18
  4. Step 4: Simplify right side
    70,459.87x = 3,913,645,921.96
  5. Step 5: Solve for x
    x = 3,913,645,921.96/70,459.87
  6. Step 6: Final answer
    x = 55,544.33

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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.