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Finding the Fourth Proportional to 619,860.60, 929,790.90 and 541,128.60

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Solution

The fourth proportional to 619,860.60, 929,790.90 and 541,128.60 is: 811,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,860.60 : 929,790.90 = 541,128.60 : x
  2. Step 2: Convert to fraction form
    619,860.60/929,790.90 = 541,128.60/x
  3. Step 3: Cross multiply
    619,860.60x = 929,790.90 × 541,128.60
  4. Step 4: Simplify right side
    619,860.60x = 503,136,448,009.74
  5. Step 5: Solve for x
    x = 503,136,448,009.74/619,860.60
  6. Step 6: Final answer
    x = 811,692.90

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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.