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Finding the Fourth Proportional to 714,693.73, 986,738.91 and 443,051.92

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Solution

The fourth proportional to 714,693.73, 986,738.91 and 443,051.92 is: 611,697.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,693.73 : 986,738.91 = 443,051.92 : x
  2. Step 2: Convert to fraction form
    714,693.73/986,738.91 = 443,051.92/x
  3. Step 3: Cross multiply
    714,693.73x = 986,738.91 × 443,051.92
  4. Step 4: Simplify right side
    714,693.73x = 437,176,568,614.21
  5. Step 5: Solve for x
    x = 437,176,568,614.21/714,693.73
  6. Step 6: Final answer
    x = 611,697.78

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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.