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Finding the Fourth Proportional to 18,807.64, 25,947.68 and 11,254.19

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Solution

The fourth proportional to 18,807.64, 25,947.68 and 11,254.19 is: 15,526.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.64 : 25,947.68 = 11,254.19 : x
  2. Step 2: Convert to fraction form
    18,807.64/25,947.68 = 11,254.19/x
  3. Step 3: Cross multiply
    18,807.64x = 25,947.68 × 11,254.19
  4. Step 4: Simplify right side
    18,807.64x = 292,019,934.77
  5. Step 5: Solve for x
    x = 292,019,934.77/18,807.64
  6. Step 6: Final answer
    x = 15,526.67

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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.