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Finding the Fourth Proportional to 191,981.80, 268,424.60 and 191,981.80

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Solution

The fourth proportional to 191,981.80, 268,424.60 and 191,981.80 is: 268,424.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,981.80 : 268,424.60 = 191,981.80 : x
  2. Step 2: Convert to fraction form
    191,981.80/268,424.60 = 191,981.80/x
  3. Step 3: Cross multiply
    191,981.80x = 268,424.60 × 191,981.80
  4. Step 4: Simplify right side
    191,981.80x = 51,532,637,872.28
  5. Step 5: Solve for x
    x = 51,532,637,872.28/191,981.80
  6. Step 6: Final answer
    x = 268,424.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.