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Finding the Fourth Proportional to 605,201.80, 907,802.70 and 393,694.60

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Solution

The fourth proportional to 605,201.80, 907,802.70 and 393,694.60 is: 590,541.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,201.80 : 907,802.70 = 393,694.60 : x
  2. Step 2: Convert to fraction form
    605,201.80/907,802.70 = 393,694.60/x
  3. Step 3: Cross multiply
    605,201.80x = 907,802.70 × 393,694.60
  4. Step 4: Simplify right side
    605,201.80x = 357,397,020,855.42
  5. Step 5: Solve for x
    x = 357,397,020,855.42/605,201.80
  6. Step 6: Final answer
    x = 590,541.90

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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.