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Finding the Fourth Proportional to 116,690.10, 175,035.15 and 91,806.90

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Solution

The fourth proportional to 116,690.10, 175,035.15 and 91,806.90 is: 137,710.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,690.10 : 175,035.15 = 91,806.90 : x
  2. Step 2: Convert to fraction form
    116,690.10/175,035.15 = 91,806.90/x
  3. Step 3: Cross multiply
    116,690.10x = 175,035.15 × 91,806.90
  4. Step 4: Simplify right side
    116,690.10x = 16,069,434,512.54
  5. Step 5: Solve for x
    x = 16,069,434,512.54/116,690.10
  6. Step 6: Final answer
    x = 137,710.35

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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.