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Finding the Fourth Proportional to 715,712.09, 988,020.86 and 454,198.86

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Solution

The fourth proportional to 715,712.09, 988,020.86 and 454,198.86 is: 627,009.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,712.09 : 988,020.86 = 454,198.86 : x
  2. Step 2: Convert to fraction form
    715,712.09/988,020.86 = 454,198.86/x
  3. Step 3: Cross multiply
    715,712.09x = 988,020.86 × 454,198.86
  4. Step 4: Simplify right side
    715,712.09x = 448,757,945,997.23
  5. Step 5: Solve for x
    x = 448,757,945,997.23/715,712.09
  6. Step 6: Final answer
    x = 627,009.04

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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.