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Finding the Fourth Proportional to 518,680.08, 778,020.12 and 163,943.22

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Solution

The fourth proportional to 518,680.08, 778,020.12 and 163,943.22 is: 245,914.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,680.08 : 778,020.12 = 163,943.22 : x
  2. Step 2: Convert to fraction form
    518,680.08/778,020.12 = 163,943.22/x
  3. Step 3: Cross multiply
    518,680.08x = 778,020.12 × 163,943.22
  4. Step 4: Simplify right side
    518,680.08x = 127,551,123,697.59
  5. Step 5: Solve for x
    x = 127,551,123,697.59/518,680.08
  6. Step 6: Final answer
    x = 245,914.83

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.