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Finding the Fourth Proportional to 14,889.80, 20,549.75 and 8,602.17

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Solution

The fourth proportional to 14,889.80, 20,549.75 and 8,602.17 is: 11,872.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,889.80 : 20,549.75 = 8,602.17 : x
  2. Step 2: Convert to fraction form
    14,889.80/20,549.75 = 8,602.17/x
  3. Step 3: Cross multiply
    14,889.80x = 20,549.75 × 8,602.17
  4. Step 4: Simplify right side
    14,889.80x = 176,772,399.95
  5. Step 5: Solve for x
    x = 176,772,399.95/14,889.80
  6. Step 6: Final answer
    x = 11,872.05

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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.