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Finding the Fourth Proportional to 185,370.39, 277,889.13 and 85,479.57

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Solution

The fourth proportional to 185,370.39, 277,889.13 and 85,479.57 is: 128,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,370.39 : 277,889.13 = 85,479.57 : x
  2. Step 2: Convert to fraction form
    185,370.39/277,889.13 = 85,479.57/x
  3. Step 3: Cross multiply
    185,370.39x = 277,889.13 × 85,479.57
  4. Step 4: Simplify right side
    185,370.39x = 23,753,843,340.07
  5. Step 5: Solve for x
    x = 23,753,843,340.07/185,370.39
  6. Step 6: Final answer
    x = 128,142.60

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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.