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Finding the Fourth Proportional to 50,875.93, 70,208.78 and 28,218.39

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Solution

The fourth proportional to 50,875.93, 70,208.78 and 28,218.39 is: 38,941.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,875.93 : 70,208.78 = 28,218.39 : x
  2. Step 2: Convert to fraction form
    50,875.93/70,208.78 = 28,218.39/x
  3. Step 3: Cross multiply
    50,875.93x = 70,208.78 × 28,218.39
  4. Step 4: Simplify right side
    50,875.93x = 1,981,178,735.46
  5. Step 5: Solve for x
    x = 1,981,178,735.46/50,875.93
  6. Step 6: Final answer
    x = 38,941.38

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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.