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Finding the Fourth Proportional to 714,820.73, 986,459.45 and 392,537.57

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Solution

The fourth proportional to 714,820.73, 986,459.45 and 392,537.57 is: 541,705.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,820.73 : 986,459.45 = 392,537.57 : x
  2. Step 2: Convert to fraction form
    714,820.73/986,459.45 = 392,537.57/x
  3. Step 3: Cross multiply
    714,820.73x = 986,459.45 × 392,537.57
  4. Step 4: Simplify right side
    714,820.73x = 387,222,388,511.55
  5. Step 5: Solve for x
    x = 387,222,388,511.55/714,820.73
  6. Step 6: Final answer
    x = 541,705.60

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Why These Related Problems?

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