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Finding the Fourth Proportional to 65,988.73, 91,069.28 and 37,693.81

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Solution

The fourth proportional to 65,988.73, 91,069.28 and 37,693.81 is: 52,020.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,988.73 : 91,069.28 = 37,693.81 : x
  2. Step 2: Convert to fraction form
    65,988.73/91,069.28 = 37,693.81/x
  3. Step 3: Cross multiply
    65,988.73x = 91,069.28 × 37,693.81
  4. Step 4: Simplify right side
    65,988.73x = 3,432,748,137.16
  5. Step 5: Solve for x
    x = 3,432,748,137.16/65,988.73
  6. Step 6: Final answer
    x = 52,020.22

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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.