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Finding the Fourth Proportional to 119,928.50, 165,347.49 and 98,338.70

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Solution

The fourth proportional to 119,928.50, 165,347.49 and 98,338.70 is: 135,581.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,928.50 : 165,347.49 = 98,338.70 : x
  2. Step 2: Convert to fraction form
    119,928.50/165,347.49 = 98,338.70/x
  3. Step 3: Cross multiply
    119,928.50x = 165,347.49 × 98,338.70
  4. Step 4: Simplify right side
    119,928.50x = 16,260,057,214.86
  5. Step 5: Solve for x
    x = 16,260,057,214.86/119,928.50
  6. Step 6: Final answer
    x = 135,581.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.