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Finding the Fourth Proportional to 92,784.80, 128,043.38 and 50,343.30

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Solution

The fourth proportional to 92,784.80, 128,043.38 and 50,343.30 is: 69,473.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,784.80 : 128,043.38 = 50,343.30 : x
  2. Step 2: Convert to fraction form
    92,784.80/128,043.38 = 50,343.30/x
  3. Step 3: Cross multiply
    92,784.80x = 128,043.38 × 50,343.30
  4. Step 4: Simplify right side
    92,784.80x = 6,446,126,292.35
  5. Step 5: Solve for x
    x = 6,446,126,292.35/92,784.80
  6. Step 6: Final answer
    x = 69,473.95

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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.