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Finding the Fourth Proportional to 92,961.37, 128,287.68 and 50,519.90

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Solution

The fourth proportional to 92,961.37, 128,287.68 and 50,519.90 is: 69,718.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,961.37 : 128,287.68 = 50,519.90 : x
  2. Step 2: Convert to fraction form
    92,961.37/128,287.68 = 50,519.90/x
  3. Step 3: Cross multiply
    92,961.37x = 128,287.68 × 50,519.90
  4. Step 4: Simplify right side
    92,961.37x = 6,481,080,123.39
  5. Step 5: Solve for x
    x = 6,481,080,123.39/92,961.37
  6. Step 6: Final answer
    x = 69,718.00

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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.