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Finding the Fourth Proportional to 764,596, 1,055,143.74 and 425,064.25

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Solution

The fourth proportional to 764,596, 1,055,143.74 and 425,064.25 is: 586,589.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,596 : 1,055,143.74 = 425,064.25 : x
  2. Step 2: Convert to fraction form
    764,596/1,055,143.74 = 425,064.25/x
  3. Step 3: Cross multiply
    764,596x = 1,055,143.74 × 425,064.25
  4. Step 4: Simplify right side
    764,596x = 448,503,882,485.30
  5. Step 5: Solve for x
    x = 448,503,882,485.30/764,596
  6. Step 6: Final answer
    x = 586,589.37

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.