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Finding the Fourth Proportional to 50,868.48, 70,205.70 and 28,212.48

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Solution

The fourth proportional to 50,868.48, 70,205.70 and 28,212.48 is: 38,937.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,868.48 : 70,205.70 = 28,212.48 : x
  2. Step 2: Convert to fraction form
    50,868.48/70,205.70 = 28,212.48/x
  3. Step 3: Cross multiply
    50,868.48x = 70,205.70 × 28,212.48
  4. Step 4: Simplify right side
    50,868.48x = 1,980,676,907.14
  5. Step 5: Solve for x
    x = 1,980,676,907.14/50,868.48
  6. Step 6: Final answer
    x = 38,937.21

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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.