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Finding the Fourth Proportional to 339,822.74, 509,701.21 and 103,167.47

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Solution

The fourth proportional to 339,822.74, 509,701.21 and 103,167.47 is: 154,741.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,822.74 : 509,701.21 = 103,167.47 : x
  2. Step 2: Convert to fraction form
    339,822.74/509,701.21 = 103,167.47/x
  3. Step 3: Cross multiply
    339,822.74x = 509,701.21 × 103,167.47
  4. Step 4: Simplify right side
    339,822.74x = 52,584,585,307.97
  5. Step 5: Solve for x
    x = 52,584,585,307.97/339,822.74
  6. Step 6: Final answer
    x = 154,741.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.