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Finding the Fourth Proportional to 183,853.54, 253,728.71 and 138,451.42

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Solution

The fourth proportional to 183,853.54, 253,728.71 and 138,451.42 is: 191,071.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,853.54 : 253,728.71 = 138,451.42 : x
  2. Step 2: Convert to fraction form
    183,853.54/253,728.71 = 138,451.42/x
  3. Step 3: Cross multiply
    183,853.54x = 253,728.71 × 138,451.42
  4. Step 4: Simplify right side
    183,853.54x = 35,129,099,906.08
  5. Step 5: Solve for x
    x = 35,129,099,906.08/183,853.54
  6. Step 6: Final answer
    x = 191,071.11

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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.