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Finding the Fourth Proportional to 624,101.20, 936,151.80 and 411,524.80

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Solution

The fourth proportional to 624,101.20, 936,151.80 and 411,524.80 is: 617,287.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,101.20 : 936,151.80 = 411,524.80 : x
  2. Step 2: Convert to fraction form
    624,101.20/936,151.80 = 411,524.80/x
  3. Step 3: Cross multiply
    624,101.20x = 936,151.80 × 411,524.80
  4. Step 4: Simplify right side
    624,101.20x = 385,249,682,264.64
  5. Step 5: Solve for x
    x = 385,249,682,264.64/624,101.20
  6. Step 6: Final answer
    x = 617,287.20

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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.