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Finding the Fourth Proportional to 518,684.58, 778,026.87 and 163,947.74

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Solution

The fourth proportional to 518,684.58, 778,026.87 and 163,947.74 is: 245,921.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,684.58 : 778,026.87 = 163,947.74 : x
  2. Step 2: Convert to fraction form
    518,684.58/778,026.87 = 163,947.74/x
  3. Step 3: Cross multiply
    518,684.58x = 778,026.87 × 163,947.74
  4. Step 4: Simplify right side
    518,684.58x = 127,555,746,995.77
  5. Step 5: Solve for x
    x = 127,555,746,995.77/518,684.58
  6. Step 6: Final answer
    x = 245,921.61

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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.