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Finding the Fourth Proportional to 65,963.87, 91,014.28 and 39,112.98

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Solution

The fourth proportional to 65,963.87, 91,014.28 and 39,112.98 is: 53,966.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,963.87 : 91,014.28 = 39,112.98 : x
  2. Step 2: Convert to fraction form
    65,963.87/91,014.28 = 39,112.98/x
  3. Step 3: Cross multiply
    65,963.87x = 91,014.28 × 39,112.98
  4. Step 4: Simplify right side
    65,963.87x = 3,559,839,494.28
  5. Step 5: Solve for x
    x = 3,559,839,494.28/65,963.87
  6. Step 6: Final answer
    x = 53,966.51

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1.5x scale

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.