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Finding the Fourth Proportional to 262,736.56, 392,665.20 and 191,808.56

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Solution

The fourth proportional to 262,736.56, 392,665.20 and 191,808.56 is: 286,661.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,736.56 : 392,665.20 = 191,808.56 : x
  2. Step 2: Convert to fraction form
    262,736.56/392,665.20 = 191,808.56/x
  3. Step 3: Cross multiply
    262,736.56x = 392,665.20 × 191,808.56
  4. Step 4: Simplify right side
    262,736.56x = 75,316,546,574.11
  5. Step 5: Solve for x
    x = 75,316,546,574.11/262,736.56
  6. Step 6: Final answer
    x = 286,661.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.