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Finding the Fourth Proportional to 50,876.94, 70,210.70 and 28,216.28

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Solution

The fourth proportional to 50,876.94, 70,210.70 and 28,216.28 is: 38,938.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,876.94 : 70,210.70 = 28,216.28 : x
  2. Step 2: Convert to fraction form
    50,876.94/70,210.70 = 28,216.28/x
  3. Step 3: Cross multiply
    50,876.94x = 70,210.70 × 28,216.28
  4. Step 4: Simplify right side
    50,876.94x = 1,981,084,910.45
  5. Step 5: Solve for x
    x = 1,981,084,910.45/50,876.94
  6. Step 6: Final answer
    x = 38,938.76

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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.