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Finding the Fourth Proportional to 542,968.80, 814,453.20 and 519,932.40

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Solution

The fourth proportional to 542,968.80, 814,453.20 and 519,932.40 is: 779,898.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,968.80 : 814,453.20 = 519,932.40 : x
  2. Step 2: Convert to fraction form
    542,968.80/814,453.20 = 519,932.40/x
  3. Step 3: Cross multiply
    542,968.80x = 814,453.20 × 519,932.40
  4. Step 4: Simplify right side
    542,968.80x = 423,460,606,963.68
  5. Step 5: Solve for x
    x = 423,460,606,963.68/542,968.80
  6. Step 6: Final answer
    x = 779,898.60

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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.