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Finding the Fourth Proportional to 443,562.30, 664,978.95 and 191,036.70

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Solution

The fourth proportional to 443,562.30, 664,978.95 and 191,036.70 is: 286,398.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,562.30 : 664,978.95 = 191,036.70 : x
  2. Step 2: Convert to fraction form
    443,562.30/664,978.95 = 191,036.70/x
  3. Step 3: Cross multiply
    443,562.30x = 664,978.95 × 191,036.70
  4. Step 4: Simplify right side
    443,562.30x = 127,035,384,177.47
  5. Step 5: Solve for x
    x = 127,035,384,177.47/443,562.30
  6. Step 6: Final answer
    x = 286,398.06

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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.