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Finding the Fourth Proportional to 695,574.56, 964,803.78 and 677,138.14

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Solution

The fourth proportional to 695,574.56, 964,803.78 and 677,138.14 is: 939,231.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,574.56 : 964,803.78 = 677,138.14 : x
  2. Step 2: Convert to fraction form
    695,574.56/964,803.78 = 677,138.14/x
  3. Step 3: Cross multiply
    695,574.56x = 964,803.78 × 677,138.14
  4. Step 4: Simplify right side
    695,574.56x = 653,305,437,054.17
  5. Step 5: Solve for x
    x = 653,305,437,054.17/695,574.56
  6. Step 6: Final answer
    x = 939,231.36

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.