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Finding the Fourth Proportional to 143,797.68, 198,307.44 and 98,541.36

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Solution

The fourth proportional to 143,797.68, 198,307.44 and 98,541.36 is: 135,895.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,797.68 : 198,307.44 = 98,541.36 : x
  2. Step 2: Convert to fraction form
    143,797.68/198,307.44 = 98,541.36/x
  3. Step 3: Cross multiply
    143,797.68x = 198,307.44 × 98,541.36
  4. Step 4: Simplify right side
    143,797.68x = 19,541,484,835.72
  5. Step 5: Solve for x
    x = 19,541,484,835.72/143,797.68
  6. Step 6: Final answer
    x = 135,895.69

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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.