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Finding the Fourth Proportional to 98,938.39, 136,647.75 and 67,051.93

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Solution

The fourth proportional to 98,938.39, 136,647.75 and 67,051.93 is: 92,608.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,938.39 : 136,647.75 = 67,051.93 : x
  2. Step 2: Convert to fraction form
    98,938.39/136,647.75 = 67,051.93/x
  3. Step 3: Cross multiply
    98,938.39x = 136,647.75 × 67,051.93
  4. Step 4: Simplify right side
    98,938.39x = 9,162,495,367.66
  5. Step 5: Solve for x
    x = 9,162,495,367.66/98,938.39
  6. Step 6: Final answer
    x = 92,608.09

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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.