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Finding the Fourth Proportional to 519,430.40, 779,145.60 and 332,806.40

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Solution

The fourth proportional to 519,430.40, 779,145.60 and 332,806.40 is: 499,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,430.40 : 779,145.60 = 332,806.40 : x
  2. Step 2: Convert to fraction form
    519,430.40/779,145.60 = 332,806.40/x
  3. Step 3: Cross multiply
    519,430.40x = 779,145.60 × 332,806.40
  4. Step 4: Simplify right side
    519,430.40x = 259,304,642,211.84
  5. Step 5: Solve for x
    x = 259,304,642,211.84/519,430.40
  6. Step 6: Final answer
    x = 499,209.60

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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.