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Finding the Fourth Proportional to 688,786.92, 950,519.52 and 382,855.32

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Solution

The fourth proportional to 688,786.92, 950,519.52 and 382,855.32 is: 528,336.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,786.92 : 950,519.52 = 382,855.32 : x
  2. Step 2: Convert to fraction form
    688,786.92/950,519.52 = 382,855.32/x
  3. Step 3: Cross multiply
    688,786.92x = 950,519.52 × 382,855.32
  4. Step 4: Simplify right side
    688,786.92x = 363,911,454,995.85
  5. Step 5: Solve for x
    x = 363,911,454,995.85/688,786.92
  6. Step 6: Final answer
    x = 528,336.77

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Double scale
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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.