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Finding the Fourth Proportional to 28,258.88, 38,995.44 and 17,647.88

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Solution

The fourth proportional to 28,258.88, 38,995.44 and 17,647.88 is: 24,352.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,258.88 : 38,995.44 = 17,647.88 : x
  2. Step 2: Convert to fraction form
    28,258.88/38,995.44 = 17,647.88/x
  3. Step 3: Cross multiply
    28,258.88x = 38,995.44 × 17,647.88
  4. Step 4: Simplify right side
    28,258.88x = 688,186,845.67
  5. Step 5: Solve for x
    x = 688,186,845.67/28,258.88
  6. Step 6: Final answer
    x = 24,352.94

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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.