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Finding the Fourth Proportional to 39,986, 55,185.54 and 23,219

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Solution

The fourth proportional to 39,986, 55,185.54 and 23,219 is: 32,045.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,986 : 55,185.54 = 23,219 : x
  2. Step 2: Convert to fraction form
    39,986/55,185.54 = 23,219/x
  3. Step 3: Cross multiply
    39,986x = 55,185.54 × 23,219
  4. Step 4: Simplify right side
    39,986x = 1,281,353,053.26
  5. Step 5: Solve for x
    x = 1,281,353,053.26/39,986
  6. Step 6: Final answer
    x = 32,045.04

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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.