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Finding the Fourth Proportional to 339,699.51, 509,622.57 and 103,061.25

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Solution

The fourth proportional to 339,699.51, 509,622.57 and 103,061.25 is: 154,614.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,699.51 : 509,622.57 = 103,061.25 : x
  2. Step 2: Convert to fraction form
    339,699.51/509,622.57 = 103,061.25/x
  3. Step 3: Cross multiply
    339,699.51x = 509,622.57 × 103,061.25
  4. Step 4: Simplify right side
    339,699.51x = 52,522,339,092.41
  5. Step 5: Solve for x
    x = 52,522,339,092.41/339,699.51
  6. Step 6: Final answer
    x = 154,614.11

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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.