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Finding the Fourth Proportional to 50,784.53, 70,076.09 and 28,428.53

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Solution

The fourth proportional to 50,784.53, 70,076.09 and 28,428.53 is: 39,227.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,784.53 : 70,076.09 = 28,428.53 : x
  2. Step 2: Convert to fraction form
    50,784.53/70,076.09 = 28,428.53/x
  3. Step 3: Cross multiply
    50,784.53x = 70,076.09 × 28,428.53
  4. Step 4: Simplify right side
    50,784.53x = 1,992,160,084.71
  5. Step 5: Solve for x
    x = 1,992,160,084.71/50,784.53
  6. Step 6: Final answer
    x = 39,227.70

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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.