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Finding the Fourth Proportional to 92,891.84, 128,191.68 and 50,451.20

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Solution

The fourth proportional to 92,891.84, 128,191.68 and 50,451.20 is: 69,623.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,891.84 : 128,191.68 = 50,451.20 : x
  2. Step 2: Convert to fraction form
    92,891.84/128,191.68 = 50,451.20/x
  3. Step 3: Cross multiply
    92,891.84x = 128,191.68 × 50,451.20
  4. Step 4: Simplify right side
    92,891.84x = 6,467,424,086.02
  5. Step 5: Solve for x
    x = 6,467,424,086.02/92,891.84
  6. Step 6: Final answer
    x = 69,623.17

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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.