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Finding the Fourth Proportional to 618,822.41, 853,959.51 and 343,178.66

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Solution

The fourth proportional to 618,822.41, 853,959.51 and 343,178.66 is: 473,578.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,822.41 : 853,959.51 = 343,178.66 : x
  2. Step 2: Convert to fraction form
    618,822.41/853,959.51 = 343,178.66/x
  3. Step 3: Cross multiply
    618,822.41x = 853,959.51 × 343,178.66
  4. Step 4: Simplify right side
    618,822.41x = 293,060,680,336.06
  5. Step 5: Solve for x
    x = 293,060,680,336.06/618,822.41
  6. Step 6: Final answer
    x = 473,578.00

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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.