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Finding the Fourth Proportional to 598,853.20, 898,279.80 and 430,016.80

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Solution

The fourth proportional to 598,853.20, 898,279.80 and 430,016.80 is: 645,025.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,853.20 : 898,279.80 = 430,016.80 : x
  2. Step 2: Convert to fraction form
    598,853.20/898,279.80 = 430,016.80/x
  3. Step 3: Cross multiply
    598,853.20x = 898,279.80 × 430,016.80
  4. Step 4: Simplify right side
    598,853.20x = 386,275,405,100.64
  5. Step 5: Solve for x
    x = 386,275,405,100.64/598,853.20
  6. Step 6: Final answer
    x = 645,025.20

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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.