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Finding the Fourth Proportional to 50,909.81, 70,253.10 and 28,248.53

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Solution

The fourth proportional to 50,909.81, 70,253.10 and 28,248.53 is: 38,981.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,909.81 : 70,253.10 = 28,248.53 : x
  2. Step 2: Convert to fraction form
    50,909.81/70,253.10 = 28,248.53/x
  3. Step 3: Cross multiply
    50,909.81x = 70,253.10 × 28,248.53
  4. Step 4: Simplify right side
    50,909.81x = 1,984,546,451.68
  5. Step 5: Solve for x
    x = 1,984,546,451.68/50,909.81
  6. Step 6: Final answer
    x = 38,981.62

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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.