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Finding the Fourth Proportional to 192,783.16, 266,042.10 and 112,257.64

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Solution

The fourth proportional to 192,783.16, 266,042.10 and 112,257.64 is: 154,916.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,783.16 : 266,042.10 = 112,257.64 : x
  2. Step 2: Convert to fraction form
    192,783.16/266,042.10 = 112,257.64/x
  3. Step 3: Cross multiply
    192,783.16x = 266,042.10 × 112,257.64
  4. Step 4: Simplify right side
    192,783.16x = 29,865,258,286.64
  5. Step 5: Solve for x
    x = 29,865,258,286.64/192,783.16
  6. Step 6: Final answer
    x = 154,916.32

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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.