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Finding the Fourth Proportional to 136,353.78, 187,992.32 and 111,733.07

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Solution

The fourth proportional to 136,353.78, 187,992.32 and 111,733.07 is: 154,047.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,353.78 : 187,992.32 = 111,733.07 : x
  2. Step 2: Convert to fraction form
    136,353.78/187,992.32 = 111,733.07/x
  3. Step 3: Cross multiply
    136,353.78x = 187,992.32 × 111,733.07
  4. Step 4: Simplify right side
    136,353.78x = 21,004,957,551.40
  5. Step 5: Solve for x
    x = 21,004,957,551.40/136,353.78
  6. Step 6: Final answer
    x = 154,047.49

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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.