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Finding the Fourth Proportional to 313,686.92, 432,839.22 and 186,359.24

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Solution

The fourth proportional to 313,686.92, 432,839.22 and 186,359.24 is: 257,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,686.92 : 432,839.22 = 186,359.24 : x
  2. Step 2: Convert to fraction form
    313,686.92/432,839.22 = 186,359.24/x
  3. Step 3: Cross multiply
    313,686.92x = 432,839.22 × 186,359.24
  4. Step 4: Simplify right side
    313,686.92x = 80,663,588,081.39
  5. Step 5: Solve for x
    x = 80,663,588,081.39/313,686.92
  6. Step 6: Final answer
    x = 257,146.80

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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.