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Finding the Fourth Proportional to 98,902.53, 136,484.93 and 53,581.40

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Solution

The fourth proportional to 98,902.53, 136,484.93 and 53,581.40 is: 73,942.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,902.53 : 136,484.93 = 53,581.40 : x
  2. Step 2: Convert to fraction form
    98,902.53/136,484.93 = 53,581.40/x
  3. Step 3: Cross multiply
    98,902.53x = 136,484.93 × 53,581.40
  4. Step 4: Simplify right side
    98,902.53x = 7,313,053,628.30
  5. Step 5: Solve for x
    x = 7,313,053,628.30/98,902.53
  6. Step 6: Final answer
    x = 73,942.03

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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.