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Finding the Fourth Proportional to 50,806.19, 70,111.81 and 28,145.15

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Solution

The fourth proportional to 50,806.19, 70,111.81 and 28,145.15 is: 38,839.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,806.19 : 70,111.81 = 28,145.15 : x
  2. Step 2: Convert to fraction form
    50,806.19/70,111.81 = 28,145.15/x
  3. Step 3: Cross multiply
    50,806.19x = 70,111.81 × 28,145.15
  4. Step 4: Simplify right side
    50,806.19x = 1,973,306,988.30
  5. Step 5: Solve for x
    x = 1,973,306,988.30/50,806.19
  6. Step 6: Final answer
    x = 38,839.89

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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.