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Finding the Fourth Proportional to 112,951.20, 169,426.80 and 42,826.80

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Solution

The fourth proportional to 112,951.20, 169,426.80 and 42,826.80 is: 64,240.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,951.20 : 169,426.80 = 42,826.80 : x
  2. Step 2: Convert to fraction form
    112,951.20/169,426.80 = 42,826.80/x
  3. Step 3: Cross multiply
    112,951.20x = 169,426.80 × 42,826.80
  4. Step 4: Simplify right side
    112,951.20x = 7,256,007,678.24
  5. Step 5: Solve for x
    x = 7,256,007,678.24/112,951.20
  6. Step 6: Final answer
    x = 64,240.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.