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Finding the Fourth Proportional to 18,969.19, 26,177.02 and 10,471.28

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Solution

The fourth proportional to 18,969.19, 26,177.02 and 10,471.28 is: 14,450.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,969.19 : 26,177.02 = 10,471.28 : x
  2. Step 2: Convert to fraction form
    18,969.19/26,177.02 = 10,471.28/x
  3. Step 3: Cross multiply
    18,969.19x = 26,177.02 × 10,471.28
  4. Step 4: Simplify right side
    18,969.19x = 274,106,748.92
  5. Step 5: Solve for x
    x = 274,106,748.92/18,969.19
  6. Step 6: Final answer
    x = 14,450.10

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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.