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Finding the Fourth Proportional to 190,885.56, 286,201.96 and 91,061.16

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Solution

The fourth proportional to 190,885.56, 286,201.96 and 91,061.16 is: 136,531.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,885.56 : 286,201.96 = 91,061.16 : x
  2. Step 2: Convert to fraction form
    190,885.56/286,201.96 = 91,061.16/x
  3. Step 3: Cross multiply
    190,885.56x = 286,201.96 × 91,061.16
  4. Step 4: Simplify right side
    190,885.56x = 26,061,882,471.87
  5. Step 5: Solve for x
    x = 26,061,882,471.87/190,885.56
  6. Step 6: Final answer
    x = 136,531.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.