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Finding the Fourth Proportional to 605,220.20, 908,705.10 and 456,504.20

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Solution

The fourth proportional to 605,220.20, 908,705.10 and 456,504.20 is: 685,416.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,220.20 : 908,705.10 = 456,504.20 : x
  2. Step 2: Convert to fraction form
    605,220.20/908,705.10 = 456,504.20/x
  3. Step 3: Cross multiply
    605,220.20x = 908,705.10 × 456,504.20
  4. Step 4: Simplify right side
    605,220.20x = 414,827,694,711.42
  5. Step 5: Solve for x
    x = 414,827,694,711.42/605,220.20
  6. Step 6: Final answer
    x = 685,416.14

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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.