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Finding the Fourth Proportional to 191,518.33, 287,266.68 and 84,871.57

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Solution

The fourth proportional to 191,518.33, 287,266.68 and 84,871.57 is: 127,302.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,518.33 : 287,266.68 = 84,871.57 : x
  2. Step 2: Convert to fraction form
    191,518.33/287,266.68 = 84,871.57/x
  3. Step 3: Cross multiply
    191,518.33x = 287,266.68 × 84,871.57
  4. Step 4: Simplify right side
    191,518.33x = 24,380,774,140.29
  5. Step 5: Solve for x
    x = 24,380,774,140.29/191,518.33
  6. Step 6: Final answer
    x = 127,302.56

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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.