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Finding the Fourth Proportional to 28,583.88, 39,445.75 and 17,405.88

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Solution

The fourth proportional to 28,583.88, 39,445.75 and 17,405.88 is: 24,020.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,583.88 : 39,445.75 = 17,405.88 : x
  2. Step 2: Convert to fraction form
    28,583.88/39,445.75 = 17,405.88/x
  3. Step 3: Cross multiply
    28,583.88x = 39,445.75 × 17,405.88
  4. Step 4: Simplify right side
    28,583.88x = 686,587,991.01
  5. Step 5: Solve for x
    x = 686,587,991.01/28,583.88
  6. Step 6: Final answer
    x = 24,020.11

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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.