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Finding the Fourth Proportional to 98,624.88, 136,099.80 and 53,910

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Solution

The fourth proportional to 98,624.88, 136,099.80 and 53,910 is: 74,394.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,624.88 : 136,099.80 = 53,910 : x
  2. Step 2: Convert to fraction form
    98,624.88/136,099.80 = 53,910/x
  3. Step 3: Cross multiply
    98,624.88x = 136,099.80 × 53,910
  4. Step 4: Simplify right side
    98,624.88x = 7,337,140,218.00
  5. Step 5: Solve for x
    x = 7,337,140,218.00/98,624.88
  6. Step 6: Final answer
    x = 74,394.41

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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.