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Finding the Fourth Proportional to 185,818.69, 256,536.18 and 122,341

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Solution

The fourth proportional to 185,818.69, 256,536.18 and 122,341 is: 168,900.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,818.69 : 256,536.18 = 122,341 : x
  2. Step 2: Convert to fraction form
    185,818.69/256,536.18 = 122,341/x
  3. Step 3: Cross multiply
    185,818.69x = 256,536.18 × 122,341
  4. Step 4: Simplify right side
    185,818.69x = 31,384,892,797.38
  5. Step 5: Solve for x
    x = 31,384,892,797.38/185,818.69
  6. Step 6: Final answer
    x = 168,900.62

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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.