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Finding the Fourth Proportional to 28,969.52, 39,964.02 and 17,032.28

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Solution

The fourth proportional to 28,969.52, 39,964.02 and 17,032.28 is: 23,496.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,969.52 : 39,964.02 = 17,032.28 : x
  2. Step 2: Convert to fraction form
    28,969.52/39,964.02 = 17,032.28/x
  3. Step 3: Cross multiply
    28,969.52x = 39,964.02 × 17,032.28
  4. Step 4: Simplify right side
    28,969.52x = 680,678,378.57
  5. Step 5: Solve for x
    x = 680,678,378.57/28,969.52
  6. Step 6: Final answer
    x = 23,496.36

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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.