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Finding the Fourth Proportional to 98,792.68, 136,243.72 and 84,506.44

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Solution

The fourth proportional to 98,792.68, 136,243.72 and 84,506.44 is: 116,541.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,792.68 : 136,243.72 = 84,506.44 : x
  2. Step 2: Convert to fraction form
    98,792.68/136,243.72 = 84,506.44/x
  3. Step 3: Cross multiply
    98,792.68x = 136,243.72 × 84,506.44
  4. Step 4: Simplify right side
    98,792.68x = 11,513,471,749.56
  5. Step 5: Solve for x
    x = 11,513,471,749.56/98,792.68
  6. Step 6: Final answer
    x = 116,541.75

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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.