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Finding the Fourth Proportional to 98,834.51, 136,391.45 and 53,512.54

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Solution

The fourth proportional to 98,834.51, 136,391.45 and 53,512.54 is: 73,847.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,834.51 : 136,391.45 = 53,512.54 : x
  2. Step 2: Convert to fraction form
    98,834.51/136,391.45 = 53,512.54/x
  3. Step 3: Cross multiply
    98,834.51x = 136,391.45 × 53,512.54
  4. Step 4: Simplify right side
    98,834.51x = 7,298,652,315.24
  5. Step 5: Solve for x
    x = 7,298,652,315.24/98,834.51
  6. Step 6: Final answer
    x = 73,847.20

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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.