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Finding the Fourth Proportional to 313,862.61, 433,128.60 and 177,922.20

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Solution

The fourth proportional to 313,862.61, 433,128.60 and 177,922.20 is: 245,531.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,862.61 : 433,128.60 = 177,922.20 : x
  2. Step 2: Convert to fraction form
    313,862.61/433,128.60 = 177,922.20/x
  3. Step 3: Cross multiply
    313,862.61x = 433,128.60 × 177,922.20
  4. Step 4: Simplify right side
    313,862.61x = 77,063,193,394.92
  5. Step 5: Solve for x
    x = 77,063,193,394.92/313,862.61
  6. Step 6: Final answer
    x = 245,531.61

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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.