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Finding the Fourth Proportional to 15,025.64, 20,735.60 and 8,738.01

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Solution

The fourth proportional to 15,025.64, 20,735.60 and 8,738.01 is: 12,058.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,025.64 : 20,735.60 = 8,738.01 : x
  2. Step 2: Convert to fraction form
    15,025.64/20,735.60 = 8,738.01/x
  3. Step 3: Cross multiply
    15,025.64x = 20,735.60 × 8,738.01
  4. Step 4: Simplify right side
    15,025.64x = 181,187,836.47
  5. Step 5: Solve for x
    x = 181,187,836.47/15,025.64
  6. Step 6: Final answer
    x = 12,058.58

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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.