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Finding the Fourth Proportional to 492,661.74, 679,872.69 and 266,307.24

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Solution

The fourth proportional to 492,661.74, 679,872.69 and 266,307.24 is: 367,503.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,661.74 : 679,872.69 = 266,307.24 : x
  2. Step 2: Convert to fraction form
    492,661.74/679,872.69 = 266,307.24/x
  3. Step 3: Cross multiply
    492,661.74x = 679,872.69 × 266,307.24
  4. Step 4: Simplify right side
    492,661.74x = 181,055,019,625.28
  5. Step 5: Solve for x
    x = 181,055,019,625.28/492,661.74
  6. Step 6: Final answer
    x = 367,503.71

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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.