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Finding the Fourth Proportional to 443,851.76, 665,602.56 and 191,151.20

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Solution

The fourth proportional to 443,851.76, 665,602.56 and 191,151.20 is: 286,651.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,851.76 : 665,602.56 = 191,151.20 : x
  2. Step 2: Convert to fraction form
    443,851.76/665,602.56 = 191,151.20/x
  3. Step 3: Cross multiply
    443,851.76x = 665,602.56 × 191,151.20
  4. Step 4: Simplify right side
    443,851.76x = 127,230,728,067.07
  5. Step 5: Solve for x
    x = 127,230,728,067.07/443,851.76
  6. Step 6: Final answer
    x = 286,651.40

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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.