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Finding the Fourth Proportional to 156,966.85, 220,147.25 and 156,966.85

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Solution

The fourth proportional to 156,966.85, 220,147.25 and 156,966.85 is: 220,147.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,966.85 : 220,147.25 = 156,966.85 : x
  2. Step 2: Convert to fraction form
    156,966.85/220,147.25 = 156,966.85/x
  3. Step 3: Cross multiply
    156,966.85x = 220,147.25 × 156,966.85
  4. Step 4: Simplify right side
    156,966.85x = 34,555,820,368.66
  5. Step 5: Solve for x
    x = 34,555,820,368.66/156,966.85
  6. Step 6: Final answer
    x = 220,147.25

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.