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Finding the Fourth Proportional to 163,893.78, 226,120.56 and 99,388.86

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Solution

The fourth proportional to 163,893.78, 226,120.56 and 99,388.86 is: 137,124.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,893.78 : 226,120.56 = 99,388.86 : x
  2. Step 2: Convert to fraction form
    163,893.78/226,120.56 = 99,388.86/x
  3. Step 3: Cross multiply
    163,893.78x = 226,120.56 × 99,388.86
  4. Step 4: Simplify right side
    163,893.78x = 22,473,864,680.96
  5. Step 5: Solve for x
    x = 22,473,864,680.96/163,893.78
  6. Step 6: Final answer
    x = 137,124.57

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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.