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Finding the Fourth Proportional to 528,051.30, 792,076.95 and 172,979.70

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Solution

The fourth proportional to 528,051.30, 792,076.95 and 172,979.70 is: 259,469.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,051.30 : 792,076.95 = 172,979.70 : x
  2. Step 2: Convert to fraction form
    528,051.30/792,076.95 = 172,979.70/x
  3. Step 3: Cross multiply
    528,051.30x = 792,076.95 × 172,979.70
  4. Step 4: Simplify right side
    528,051.30x = 137,013,233,187.92
  5. Step 5: Solve for x
    x = 137,013,233,187.92/528,051.30
  6. Step 6: Final answer
    x = 259,469.55

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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.