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Finding the Fourth Proportional to 339,343.98, 508,931.85 and 114,699.45

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Solution

The fourth proportional to 339,343.98, 508,931.85 and 114,699.45 is: 172,020.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,343.98 : 508,931.85 = 114,699.45 : x
  2. Step 2: Convert to fraction form
    339,343.98/508,931.85 = 114,699.45/x
  3. Step 3: Cross multiply
    339,343.98x = 508,931.85 × 114,699.45
  4. Step 4: Simplify right side
    339,343.98x = 58,374,203,282.48
  5. Step 5: Solve for x
    x = 58,374,203,282.48/339,343.98
  6. Step 6: Final answer
    x = 172,020.74

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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.