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Finding the Fourth Proportional to 70,361.68, 97,108.34 and 40,140.04

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Solution

The fourth proportional to 70,361.68, 97,108.34 and 40,140.04 is: 55,398.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,361.68 : 97,108.34 = 40,140.04 : x
  2. Step 2: Convert to fraction form
    70,361.68/97,108.34 = 40,140.04/x
  3. Step 3: Cross multiply
    70,361.68x = 97,108.34 × 40,140.04
  4. Step 4: Simplify right side
    70,361.68x = 3,897,932,651.93
  5. Step 5: Solve for x
    x = 3,897,932,651.93/70,361.68
  6. Step 6: Final answer
    x = 55,398.52

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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.