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Finding the Fourth Proportional to 178,207.80, 266,939.10 and 83,518.80

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Solution

The fourth proportional to 178,207.80, 266,939.10 and 83,518.80 is: 125,103.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,207.80 : 266,939.10 = 83,518.80 : x
  2. Step 2: Convert to fraction form
    178,207.80/266,939.10 = 83,518.80/x
  3. Step 3: Cross multiply
    178,207.80x = 266,939.10 × 83,518.80
  4. Step 4: Simplify right side
    178,207.80x = 22,294,433,305.08
  5. Step 5: Solve for x
    x = 22,294,433,305.08/178,207.80
  6. Step 6: Final answer
    x = 125,103.58

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1.5x scale

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.