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Finding the Fourth Proportional to 36,807.71, 55,215.08 and 13,428.59

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Solution

The fourth proportional to 36,807.71, 55,215.08 and 13,428.59 is: 20,144.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,807.71 : 55,215.08 = 13,428.59 : x
  2. Step 2: Convert to fraction form
    36,807.71/55,215.08 = 13,428.59/x
  3. Step 3: Cross multiply
    36,807.71x = 55,215.08 × 13,428.59
  4. Step 4: Simplify right side
    36,807.71x = 741,460,603.99
  5. Step 5: Solve for x
    x = 741,460,603.99/36,807.71
  6. Step 6: Final answer
    x = 20,144.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.