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Finding the Fourth Proportional to 84,898.87, 117,153.58 and 49,091.20

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Solution

The fourth proportional to 84,898.87, 117,153.58 and 49,091.20 is: 67,741.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,898.87 : 117,153.58 = 49,091.20 : x
  2. Step 2: Convert to fraction form
    84,898.87/117,153.58 = 49,091.20/x
  3. Step 3: Cross multiply
    84,898.87x = 117,153.58 × 49,091.20
  4. Step 4: Simplify right side
    84,898.87x = 5,751,209,826.50
  5. Step 5: Solve for x
    x = 5,751,209,826.50/84,898.87
  6. Step 6: Final answer
    x = 67,741.89

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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.