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Finding the Fourth Proportional to 188,527.20, 260,160.90 and 103,643.64

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Solution

The fourth proportional to 188,527.20, 260,160.90 and 103,643.64 is: 143,024.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,527.20 : 260,160.90 = 103,643.64 : x
  2. Step 2: Convert to fraction form
    188,527.20/260,160.90 = 103,643.64/x
  3. Step 3: Cross multiply
    188,527.20x = 260,160.90 × 103,643.64
  4. Step 4: Simplify right side
    188,527.20x = 26,964,022,661.68
  5. Step 5: Solve for x
    x = 26,964,022,661.68/188,527.20
  6. Step 6: Final answer
    x = 143,024.58

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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.