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Finding the Fourth Proportional to 62,997.21, 86,931.63 and 36,139.03

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Solution

The fourth proportional to 62,997.21, 86,931.63 and 36,139.03 is: 49,869.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,997.21 : 86,931.63 = 36,139.03 : x
  2. Step 2: Convert to fraction form
    62,997.21/86,931.63 = 36,139.03/x
  3. Step 3: Cross multiply
    62,997.21x = 86,931.63 × 36,139.03
  4. Step 4: Simplify right side
    62,997.21x = 3,141,624,567.19
  5. Step 5: Solve for x
    x = 3,141,624,567.19/62,997.21
  6. Step 6: Final answer
    x = 49,869.27

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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.