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Finding the Fourth Proportional to 586,131.20, 879,340.80 and 165,401.60

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Solution

The fourth proportional to 586,131.20, 879,340.80 and 165,401.60 is: 248,143.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,131.20 : 879,340.80 = 165,401.60 : x
  2. Step 2: Convert to fraction form
    586,131.20/879,340.80 = 165,401.60/x
  3. Step 3: Cross multiply
    586,131.20x = 879,340.80 × 165,401.60
  4. Step 4: Simplify right side
    586,131.20x = 145,444,375,265.28
  5. Step 5: Solve for x
    x = 145,444,375,265.28/586,131.20
  6. Step 6: Final answer
    x = 248,143.04

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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.