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Finding the Fourth Proportional to 66,259.92, 91,438.65 and 37,982.01

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Solution

The fourth proportional to 66,259.92, 91,438.65 and 37,982.01 is: 52,415.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,259.92 : 91,438.65 = 37,982.01 : x
  2. Step 2: Convert to fraction form
    66,259.92/91,438.65 = 37,982.01/x
  3. Step 3: Cross multiply
    66,259.92x = 91,438.65 × 37,982.01
  4. Step 4: Simplify right side
    66,259.92x = 3,473,023,718.69
  5. Step 5: Solve for x
    x = 3,473,023,718.69/66,259.92
  6. Step 6: Final answer
    x = 52,415.15

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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.