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Finding the Fourth Proportional to 443,911.73, 666,341.44 and 191,316.88

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Solution

The fourth proportional to 443,911.73, 666,341.44 and 191,316.88 is: 287,179.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,911.73 : 666,341.44 = 191,316.88 : x
  2. Step 2: Convert to fraction form
    443,911.73/666,341.44 = 191,316.88/x
  3. Step 3: Cross multiply
    443,911.73x = 666,341.44 × 191,316.88
  4. Step 4: Simplify right side
    443,911.73x = 127,482,361,983.80
  5. Step 5: Solve for x
    x = 127,482,361,983.80/443,911.73
  6. Step 6: Final answer
    x = 287,179.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.