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Finding the Fourth Proportional to 50,928.96, 70,282.08 and 28,572.96

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Solution

The fourth proportional to 50,928.96, 70,282.08 and 28,572.96 is: 39,430.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,928.96 : 70,282.08 = 28,572.96 : x
  2. Step 2: Convert to fraction form
    50,928.96/70,282.08 = 28,572.96/x
  3. Step 3: Cross multiply
    50,928.96x = 70,282.08 × 28,572.96
  4. Step 4: Simplify right side
    50,928.96x = 2,008,167,060.56
  5. Step 5: Solve for x
    x = 2,008,167,060.56/50,928.96
  6. Step 6: Final answer
    x = 39,430.75

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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.