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Finding the Fourth Proportional to 140,383.78, 193,401.21 and 97,866.34

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Solution

The fourth proportional to 140,383.78, 193,401.21 and 97,866.34 is: 134,826.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,383.78 : 193,401.21 = 97,866.34 : x
  2. Step 2: Convert to fraction form
    140,383.78/193,401.21 = 97,866.34/x
  3. Step 3: Cross multiply
    140,383.78x = 193,401.21 × 97,866.34
  4. Step 4: Simplify right side
    140,383.78x = 18,927,468,574.27
  5. Step 5: Solve for x
    x = 18,927,468,574.27/140,383.78
  6. Step 6: Final answer
    x = 134,826.61

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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.