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Finding the Fourth Proportional to 98,890.93, 136,469.64 and 58,624.48

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Solution

The fourth proportional to 98,890.93, 136,469.64 and 58,624.48 is: 80,901.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,890.93 : 136,469.64 = 58,624.48 : x
  2. Step 2: Convert to fraction form
    98,890.93/136,469.64 = 58,624.48/x
  3. Step 3: Cross multiply
    98,890.93x = 136,469.64 × 58,624.48
  4. Step 4: Simplify right side
    98,890.93x = 8,000,461,680.79
  5. Step 5: Solve for x
    x = 8,000,461,680.79/98,890.93
  6. Step 6: Final answer
    x = 80,901.88

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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.