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Finding the Fourth Proportional to 156,759.98, 216,390.82 and 109,041.02

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Solution

The fourth proportional to 156,759.98, 216,390.82 and 109,041.02 is: 150,519.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,759.98 : 216,390.82 = 109,041.02 : x
  2. Step 2: Convert to fraction form
    156,759.98/216,390.82 = 109,041.02/x
  3. Step 3: Cross multiply
    156,759.98x = 216,390.82 × 109,041.02
  4. Step 4: Simplify right side
    156,759.98x = 23,595,475,731.44
  5. Step 5: Solve for x
    x = 23,595,475,731.44/156,759.98
  6. Step 6: Final answer
    x = 150,519.77

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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.