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Finding the Fourth Proportional to 98,358.93, 135,661.53 and 68,194.74

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Solution

The fourth proportional to 98,358.93, 135,661.53 and 68,194.74 is: 94,057.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,358.93 : 135,661.53 = 68,194.74 : x
  2. Step 2: Convert to fraction form
    98,358.93/135,661.53 = 68,194.74/x
  3. Step 3: Cross multiply
    98,358.93x = 135,661.53 × 68,194.74
  4. Step 4: Simplify right side
    98,358.93x = 9,251,402,766.35
  5. Step 5: Solve for x
    x = 9,251,402,766.35/98,358.93
  6. Step 6: Final answer
    x = 94,057.58

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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.