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Finding the Fourth Proportional to 791,188.80, 1,187,704.80 and 476,001.60

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Solution

The fourth proportional to 791,188.80, 1,187,704.80 and 476,001.60 is: 714,556.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,188.80 : 1,187,704.80 = 476,001.60 : x
  2. Step 2: Convert to fraction form
    791,188.80/1,187,704.80 = 476,001.60/x
  3. Step 3: Cross multiply
    791,188.80x = 1,187,704.80 × 476,001.60
  4. Step 4: Simplify right side
    791,188.80x = 565,349,385,127.68
  5. Step 5: Solve for x
    x = 565,349,385,127.68/791,188.80
  6. Step 6: Final answer
    x = 714,556.86

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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.