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Finding the Fourth Proportional to 207,906.60, 286,880.76 and 117,266.52

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Solution

The fourth proportional to 207,906.60, 286,880.76 and 117,266.52 is: 161,810.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,906.60 : 286,880.76 = 117,266.52 : x
  2. Step 2: Convert to fraction form
    207,906.60/286,880.76 = 117,266.52/x
  3. Step 3: Cross multiply
    207,906.60x = 286,880.76 × 117,266.52
  4. Step 4: Simplify right side
    207,906.60x = 33,641,508,380.16
  5. Step 5: Solve for x
    x = 33,641,508,380.16/207,906.60
  6. Step 6: Final answer
    x = 161,810.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.