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Finding the Fourth Proportional to 519,864.60, 779,796.90 and 164,906.40

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Solution

The fourth proportional to 519,864.60, 779,796.90 and 164,906.40 is: 247,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,864.60 : 779,796.90 = 164,906.40 : x
  2. Step 2: Convert to fraction form
    519,864.60/779,796.90 = 164,906.40/x
  3. Step 3: Cross multiply
    519,864.60x = 779,796.90 × 164,906.40
  4. Step 4: Simplify right side
    519,864.60x = 128,593,499,510.16
  5. Step 5: Solve for x
    x = 128,593,499,510.16/519,864.60
  6. Step 6: Final answer
    x = 247,359.60

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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.