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Finding the Fourth Proportional to 235,158.54, 324,521.41 and 138,383.79

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Solution

The fourth proportional to 235,158.54, 324,521.41 and 138,383.79 is: 190,971.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,158.54 : 324,521.41 = 138,383.79 : x
  2. Step 2: Convert to fraction form
    235,158.54/324,521.41 = 138,383.79/x
  3. Step 3: Cross multiply
    235,158.54x = 324,521.41 × 138,383.79
  4. Step 4: Simplify right side
    235,158.54x = 44,908,503,563.14
  5. Step 5: Solve for x
    x = 44,908,503,563.14/235,158.54
  6. Step 6: Final answer
    x = 190,971.18

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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.