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Finding the Fourth Proportional to 608,305.68, 839,182.86 and 393,514.92

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Solution

The fourth proportional to 608,305.68, 839,182.86 and 393,514.92 is: 542,870.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,305.68 : 839,182.86 = 393,514.92 : x
  2. Step 2: Convert to fraction form
    608,305.68/839,182.86 = 393,514.92/x
  3. Step 3: Cross multiply
    608,305.68x = 839,182.86 × 393,514.92
  4. Step 4: Simplify right side
    608,305.68x = 330,230,976,018.27
  5. Step 5: Solve for x
    x = 330,230,976,018.27/608,305.68
  6. Step 6: Final answer
    x = 542,870.12

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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.