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Finding the Fourth Proportional to 313,878.70, 433,143.55 and 177,925.21

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Solution

The fourth proportional to 313,878.70, 433,143.55 and 177,925.21 is: 245,531.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,878.70 : 433,143.55 = 177,925.21 : x
  2. Step 2: Convert to fraction form
    313,878.70/433,143.55 = 177,925.21/x
  3. Step 3: Cross multiply
    313,878.70x = 433,143.55 × 177,925.21
  4. Step 4: Simplify right side
    313,878.70x = 77,067,156,233.44
  5. Step 5: Solve for x
    x = 77,067,156,233.44/313,878.70
  6. Step 6: Final answer
    x = 245,531.66

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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.