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Finding the Fourth Proportional to 345,115.77, 517,697.31 and 117,318.69

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Solution

The fourth proportional to 345,115.77, 517,697.31 and 117,318.69 is: 175,986.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,115.77 : 517,697.31 = 117,318.69 : x
  2. Step 2: Convert to fraction form
    345,115.77/517,697.31 = 117,318.69/x
  3. Step 3: Cross multiply
    345,115.77x = 517,697.31 × 117,318.69
  4. Step 4: Simplify right side
    345,115.77x = 60,735,572,495.52
  5. Step 5: Solve for x
    x = 60,735,572,495.52/345,115.77
  6. Step 6: Final answer
    x = 175,986.08

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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.