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Finding the Fourth Proportional to 185,143.82, 277,701.80 and 66,815.15

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Solution

The fourth proportional to 185,143.82, 277,701.80 and 66,815.15 is: 100,217.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,143.82 : 277,701.80 = 66,815.15 : x
  2. Step 2: Convert to fraction form
    185,143.82/277,701.80 = 66,815.15/x
  3. Step 3: Cross multiply
    185,143.82x = 277,701.80 × 66,815.15
  4. Step 4: Simplify right side
    185,143.82x = 18,554,685,699.69
  5. Step 5: Solve for x
    x = 18,554,685,699.69/185,143.82
  6. Step 6: Final answer
    x = 100,217.69

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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.