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Finding the Fourth Proportional to 694,076.28, 957,818.52 and 388,149.18

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Solution

The fourth proportional to 694,076.28, 957,818.52 and 388,149.18 is: 535,642.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,076.28 : 957,818.52 = 388,149.18 : x
  2. Step 2: Convert to fraction form
    694,076.28/957,818.52 = 388,149.18/x
  3. Step 3: Cross multiply
    694,076.28x = 957,818.52 × 388,149.18
  4. Step 4: Simplify right side
    694,076.28x = 371,776,473,126.81
  5. Step 5: Solve for x
    x = 371,776,473,126.81/694,076.28
  6. Step 6: Final answer
    x = 535,642.10

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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.