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Finding the Fourth Proportional to 482,574.28, 723,861.42 and 261,390.28

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Solution

The fourth proportional to 482,574.28, 723,861.42 and 261,390.28 is: 392,085.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,574.28 : 723,861.42 = 261,390.28 : x
  2. Step 2: Convert to fraction form
    482,574.28/723,861.42 = 261,390.28/x
  3. Step 3: Cross multiply
    482,574.28x = 723,861.42 × 261,390.28
  4. Step 4: Simplify right side
    482,574.28x = 189,210,339,255.00
  5. Step 5: Solve for x
    x = 189,210,339,255.00/482,574.28
  6. Step 6: Final answer
    x = 392,085.42

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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.