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Finding the Fourth Proportional to 191,903.73, 287,713.41 and 91,968.75

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Solution

The fourth proportional to 191,903.73, 287,713.41 and 91,968.75 is: 137,884.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,903.73 : 287,713.41 = 91,968.75 : x
  2. Step 2: Convert to fraction form
    191,903.73/287,713.41 = 91,968.75/x
  3. Step 3: Cross multiply
    191,903.73x = 287,713.41 × 91,968.75
  4. Step 4: Simplify right side
    191,903.73x = 26,460,642,675.94
  5. Step 5: Solve for x
    x = 26,460,642,675.94/191,903.73
  6. Step 6: Final answer
    x = 137,884.98

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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.