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Finding the Fourth Proportional to 416,140.80, 624,211.20 and 404,476.80

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Solution

The fourth proportional to 416,140.80, 624,211.20 and 404,476.80 is: 606,715.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,140.80 : 624,211.20 = 404,476.80 : x
  2. Step 2: Convert to fraction form
    416,140.80/624,211.20 = 404,476.80/x
  3. Step 3: Cross multiply
    416,140.80x = 624,211.20 × 404,476.80
  4. Step 4: Simplify right side
    416,140.80x = 252,478,948,700.16
  5. Step 5: Solve for x
    x = 252,478,948,700.16/416,140.80
  6. Step 6: Final answer
    x = 606,715.20

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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.