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Finding the Fourth Proportional to 191,286.68, 286,806.92 and 91,444.64

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Solution

The fourth proportional to 191,286.68, 286,806.92 and 91,444.64 is: 137,108.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,286.68 : 286,806.92 = 91,444.64 : x
  2. Step 2: Convert to fraction form
    191,286.68/286,806.92 = 91,444.64/x
  3. Step 3: Cross multiply
    191,286.68x = 286,806.92 × 91,444.64
  4. Step 4: Simplify right side
    191,286.68x = 26,226,955,548.91
  5. Step 5: Solve for x
    x = 26,226,955,548.91/191,286.68
  6. Step 6: Final answer
    x = 137,108.11

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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.