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Finding the Fourth Proportional to 482,986.40, 724,479.60 and 383,453.60

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Solution

The fourth proportional to 482,986.40, 724,479.60 and 383,453.60 is: 575,180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,986.40 : 724,479.60 = 383,453.60 : x
  2. Step 2: Convert to fraction form
    482,986.40/724,479.60 = 383,453.60/x
  3. Step 3: Cross multiply
    482,986.40x = 724,479.60 × 383,453.60
  4. Step 4: Simplify right side
    482,986.40x = 277,804,310,746.56
  5. Step 5: Solve for x
    x = 277,804,310,746.56/482,986.40
  6. Step 6: Final answer
    x = 575,180.40

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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.