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Finding the Fourth Proportional to 313,685.92, 432,837.84 and 186,358.24

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Solution

The fourth proportional to 313,685.92, 432,837.84 and 186,358.24 is: 257,145.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,685.92 : 432,837.84 = 186,358.24 : x
  2. Step 2: Convert to fraction form
    313,685.92/432,837.84 = 186,358.24/x
  3. Step 3: Cross multiply
    313,685.92x = 432,837.84 × 186,358.24
  4. Step 4: Simplify right side
    313,685.92x = 80,662,898,067.80
  5. Step 5: Solve for x
    x = 80,662,898,067.80/313,685.92
  6. Step 6: Final answer
    x = 257,145.42

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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.