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Finding the Fourth Proportional to 143,926.40, 215,695.20 and 96,406.40

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Solution

The fourth proportional to 143,926.40, 215,695.20 and 96,406.40 is: 144,479.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,926.40 : 215,695.20 = 96,406.40 : x
  2. Step 2: Convert to fraction form
    143,926.40/215,695.20 = 96,406.40/x
  3. Step 3: Cross multiply
    143,926.40x = 215,695.20 × 96,406.40
  4. Step 4: Simplify right side
    143,926.40x = 20,794,397,729.28
  5. Step 5: Solve for x
    x = 20,794,397,729.28/143,926.40
  6. Step 6: Final answer
    x = 144,479.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.