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Finding the Fourth Proportional to 524,017.20, 786,025.80 and 191,722.80

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Solution

The fourth proportional to 524,017.20, 786,025.80 and 191,722.80 is: 287,584.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,017.20 : 786,025.80 = 191,722.80 : x
  2. Step 2: Convert to fraction form
    524,017.20/786,025.80 = 191,722.80/x
  3. Step 3: Cross multiply
    524,017.20x = 786,025.80 × 191,722.80
  4. Step 4: Simplify right side
    524,017.20x = 150,699,067,248.24
  5. Step 5: Solve for x
    x = 150,699,067,248.24/524,017.20
  6. Step 6: Final answer
    x = 287,584.20

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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.