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Finding the Fourth Proportional to 518,686.08, 778,029.12 and 163,949.24

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Solution

The fourth proportional to 518,686.08, 778,029.12 and 163,949.24 is: 245,923.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,686.08 : 778,029.12 = 163,949.24 : x
  2. Step 2: Convert to fraction form
    518,686.08/778,029.12 = 163,949.24/x
  3. Step 3: Cross multiply
    518,686.08x = 778,029.12 × 163,949.24
  4. Step 4: Simplify right side
    518,686.08x = 127,557,282,921.87
  5. Step 5: Solve for x
    x = 127,557,282,921.87/518,686.08
  6. Step 6: Final answer
    x = 245,923.86

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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.