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Finding the Fourth Proportional to 67,059.63, 100,990.62 and 61,081.02

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Solution

The fourth proportional to 67,059.63, 100,990.62 and 61,081.02 is: 91,986.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,059.63 : 100,990.62 = 61,081.02 : x
  2. Step 2: Convert to fraction form
    67,059.63/100,990.62 = 61,081.02/x
  3. Step 3: Cross multiply
    67,059.63x = 100,990.62 × 61,081.02
  4. Step 4: Simplify right side
    67,059.63x = 6,168,610,080.03
  5. Step 5: Solve for x
    x = 6,168,610,080.03/67,059.63
  6. Step 6: Final answer
    x = 91,986.94

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.