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Finding the Fourth Proportional to 28,995.84, 40,029.12 and 17,824.32

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Solution

The fourth proportional to 28,995.84, 40,029.12 and 17,824.32 is: 24,606.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,995.84 : 40,029.12 = 17,824.32 : x
  2. Step 2: Convert to fraction form
    28,995.84/40,029.12 = 17,824.32/x
  3. Step 3: Cross multiply
    28,995.84x = 40,029.12 × 17,824.32
  4. Step 4: Simplify right side
    28,995.84x = 713,491,844.20
  5. Step 5: Solve for x
    x = 713,491,844.20/28,995.84
  6. Step 6: Final answer
    x = 24,606.70

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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.