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Finding the Fourth Proportional to 98,280.51, 135,584.42 and 62,451.30

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Solution

The fourth proportional to 98,280.51, 135,584.42 and 62,451.30 is: 86,155.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,280.51 : 135,584.42 = 62,451.30 : x
  2. Step 2: Convert to fraction form
    98,280.51/135,584.42 = 62,451.30/x
  3. Step 3: Cross multiply
    98,280.51x = 135,584.42 × 62,451.30
  4. Step 4: Simplify right side
    98,280.51x = 8,467,423,484.93
  5. Step 5: Solve for x
    x = 8,467,423,484.93/98,280.51
  6. Step 6: Final answer
    x = 86,155.68

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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.