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Finding the Fourth Proportional to 98,718.53, 136,231.04 and 53,396.46

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Solution

The fourth proportional to 98,718.53, 136,231.04 and 53,396.46 is: 73,686.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,718.53 : 136,231.04 = 53,396.46 : x
  2. Step 2: Convert to fraction form
    98,718.53/136,231.04 = 53,396.46/x
  3. Step 3: Cross multiply
    98,718.53x = 136,231.04 × 53,396.46
  4. Step 4: Simplify right side
    98,718.53x = 7,274,255,011.14
  5. Step 5: Solve for x
    x = 7,274,255,011.14/98,718.53
  6. Step 6: Final answer
    x = 73,686.83

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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.