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Finding the Fourth Proportional to 662,952.80, 994,429.20 and 411,010.40

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Solution

The fourth proportional to 662,952.80, 994,429.20 and 411,010.40 is: 616,515.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,952.80 : 994,429.20 = 411,010.40 : x
  2. Step 2: Convert to fraction form
    662,952.80/994,429.20 = 411,010.40/x
  3. Step 3: Cross multiply
    662,952.80x = 994,429.20 × 411,010.40
  4. Step 4: Simplify right side
    662,952.80x = 408,720,743,263.68
  5. Step 5: Solve for x
    x = 408,720,743,263.68/662,952.80
  6. Step 6: Final answer
    x = 616,515.60

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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.