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Finding the Fourth Proportional to 577,862.21, 866,577.80 and 198,675.59

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Solution

The fourth proportional to 577,862.21, 866,577.80 and 198,675.59 is: 297,939.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,862.21 : 866,577.80 = 198,675.59 : x
  2. Step 2: Convert to fraction form
    577,862.21/866,577.80 = 198,675.59/x
  3. Step 3: Cross multiply
    577,862.21x = 866,577.80 × 198,675.59
  4. Step 4: Simplify right side
    577,862.21x = 172,167,858,359.04
  5. Step 5: Solve for x
    x = 172,167,858,359.04/577,862.21
  6. Step 6: Final answer
    x = 297,939.29

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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.