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Finding the Fourth Proportional to 412,779.20, 619,168.80 and 176,583.20

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Solution

The fourth proportional to 412,779.20, 619,168.80 and 176,583.20 is: 264,874.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,779.20 : 619,168.80 = 176,583.20 : x
  2. Step 2: Convert to fraction form
    412,779.20/619,168.80 = 176,583.20/x
  3. Step 3: Cross multiply
    412,779.20x = 619,168.80 × 176,583.20
  4. Step 4: Simplify right side
    412,779.20x = 109,334,808,044.16
  5. Step 5: Solve for x
    x = 109,334,808,044.16/412,779.20
  6. Step 6: Final answer
    x = 264,874.80

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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.