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Finding the Fourth Proportional to 185,161.28, 255,548 and 113,528.64

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Solution

The fourth proportional to 185,161.28, 255,548 and 113,528.64 is: 156,685.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,161.28 : 255,548 = 113,528.64 : x
  2. Step 2: Convert to fraction form
    185,161.28/255,548 = 113,528.64/x
  3. Step 3: Cross multiply
    185,161.28x = 255,548 × 113,528.64
  4. Step 4: Simplify right side
    185,161.28x = 29,012,016,894.72
  5. Step 5: Solve for x
    x = 29,012,016,894.72/185,161.28
  6. Step 6: Final answer
    x = 156,685.12

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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.