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Finding the Fourth Proportional to 188,563.78, 260,218.98 and 103,686.30

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Solution

The fourth proportional to 188,563.78, 260,218.98 and 103,686.30 is: 143,087.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,563.78 : 260,218.98 = 103,686.30 : x
  2. Step 2: Convert to fraction form
    188,563.78/260,218.98 = 103,686.30/x
  3. Step 3: Cross multiply
    188,563.78x = 260,218.98 × 103,686.30
  4. Step 4: Simplify right side
    188,563.78x = 26,981,143,225.97
  5. Step 5: Solve for x
    x = 26,981,143,225.97/188,563.78
  6. Step 6: Final answer
    x = 143,087.62

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1.5x scale

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.