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Finding the Fourth Proportional to 185,223.65, 255,608.26 and 100,340.91

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Solution

The fourth proportional to 185,223.65, 255,608.26 and 100,340.91 is: 138,470.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,223.65 : 255,608.26 = 100,340.91 : x
  2. Step 2: Convert to fraction form
    185,223.65/255,608.26 = 100,340.91/x
  3. Step 3: Cross multiply
    185,223.65x = 255,608.26 × 100,340.91
  4. Step 4: Simplify right side
    185,223.65x = 25,647,965,161.06
  5. Step 5: Solve for x
    x = 25,647,965,161.06/185,223.65
  6. Step 6: Final answer
    x = 138,470.25

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1.5x scale

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.