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Finding the Fourth Proportional to 98,240.47, 135,571.85 and 53,528.47

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Solution

The fourth proportional to 98,240.47, 135,571.85 and 53,528.47 is: 73,869.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,240.47 : 135,571.85 = 53,528.47 : x
  2. Step 2: Convert to fraction form
    98,240.47/135,571.85 = 53,528.47/x
  3. Step 3: Cross multiply
    98,240.47x = 135,571.85 × 53,528.47
  4. Step 4: Simplify right side
    98,240.47x = 7,256,953,705.57
  5. Step 5: Solve for x
    x = 7,256,953,705.57/98,240.47
  6. Step 6: Final answer
    x = 73,869.29

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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.