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Finding the Fourth Proportional to 140,562.98, 210,844.20 and 45,793.05

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Solution

The fourth proportional to 140,562.98, 210,844.20 and 45,793.05 is: 68,689.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,562.98 : 210,844.20 = 45,793.05 : x
  2. Step 2: Convert to fraction form
    140,562.98/210,844.20 = 45,793.05/x
  3. Step 3: Cross multiply
    140,562.98x = 210,844.20 × 45,793.05
  4. Step 4: Simplify right side
    140,562.98x = 9,655,197,938.59
  5. Step 5: Solve for x
    x = 9,655,197,938.59/140,562.98
  6. Step 6: Final answer
    x = 68,689.48

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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.