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Finding the Fourth Proportional to 117,417.70, 175,905.12 and 90,993.27

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Solution

The fourth proportional to 117,417.70, 175,905.12 and 90,993.27 is: 136,318.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,417.70 : 175,905.12 = 90,993.27 : x
  2. Step 2: Convert to fraction form
    117,417.70/175,905.12 = 90,993.27/x
  3. Step 3: Cross multiply
    117,417.70x = 175,905.12 × 90,993.27
  4. Step 4: Simplify right side
    117,417.70x = 16,006,182,567.57
  5. Step 5: Solve for x
    x = 16,006,182,567.57/117,417.70
  6. Step 6: Final answer
    x = 136,318.31

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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.