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Finding the Fourth Proportional to 619,131.76, 928,622.76 and 169,889.20

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Solution

The fourth proportional to 619,131.76, 928,622.76 and 169,889.20 is: 254,813.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,131.76 : 928,622.76 = 169,889.20 : x
  2. Step 2: Convert to fraction form
    619,131.76/928,622.76 = 169,889.20/x
  3. Step 3: Cross multiply
    619,131.76x = 928,622.76 × 169,889.20
  4. Step 4: Simplify right side
    619,131.76x = 157,762,977,798.19
  5. Step 5: Solve for x
    x = 157,762,977,798.19/619,131.76
  6. Step 6: Final answer
    x = 254,813.25

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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.