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Finding the Fourth Proportional to 518,685.58, 778,028.37 and 163,948.74

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Solution

The fourth proportional to 518,685.58, 778,028.37 and 163,948.74 is: 245,923.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,685.58 : 778,028.37 = 163,948.74 : x
  2. Step 2: Convert to fraction form
    518,685.58/778,028.37 = 163,948.74/x
  3. Step 3: Cross multiply
    518,685.58x = 778,028.37 × 163,948.74
  4. Step 4: Simplify right side
    518,685.58x = 127,556,770,945.75
  5. Step 5: Solve for x
    x = 127,556,770,945.75/518,685.58
  6. Step 6: Final answer
    x = 245,923.11

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Half scale
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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.