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Finding the Fourth Proportional to 712,195.44, 982,830 and 389,926.40

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Solution

The fourth proportional to 712,195.44, 982,830 and 389,926.40 is: 538,098.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,195.44 : 982,830 = 389,926.40 : x
  2. Step 2: Convert to fraction form
    712,195.44/982,830 = 389,926.40/x
  3. Step 3: Cross multiply
    712,195.44x = 982,830 × 389,926.40
  4. Step 4: Simplify right side
    712,195.44x = 383,231,363,712
  5. Step 5: Solve for x
    x = 383,231,363,712/712,195.44
  6. Step 6: Final answer
    x = 538,098.59

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.