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Finding the Fourth Proportional to 188,714.16, 260,426.16 and 103,836.48

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Solution

The fourth proportional to 188,714.16, 260,426.16 and 103,836.48 is: 143,294.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,714.16 : 260,426.16 = 103,836.48 : x
  2. Step 2: Convert to fraction form
    188,714.16/260,426.16 = 103,836.48/x
  3. Step 3: Cross multiply
    188,714.16x = 260,426.16 × 103,836.48
  4. Step 4: Simplify right side
    188,714.16x = 27,041,735,754.32
  5. Step 5: Solve for x
    x = 27,041,735,754.32/188,714.16
  6. Step 6: Final answer
    x = 143,294.68

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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.