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Finding the Fourth Proportional to 716,968.32, 988,863.64 and 445,197.12

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Solution

The fourth proportional to 716,968.32, 988,863.64 and 445,197.12 is: 614,028.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,968.32 : 988,863.64 = 445,197.12 : x
  2. Step 2: Convert to fraction form
    716,968.32/988,863.64 = 445,197.12/x
  3. Step 3: Cross multiply
    716,968.32x = 988,863.64 × 445,197.12
  4. Step 4: Simplify right side
    716,968.32x = 440,239,244,600.72
  5. Step 5: Solve for x
    x = 440,239,244,600.72/716,968.32
  6. Step 6: Final answer
    x = 614,028.87

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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.