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Finding the Fourth Proportional to 168,461.40, 252,692.10 and 68,588.40

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Solution

The fourth proportional to 168,461.40, 252,692.10 and 68,588.40 is: 102,882.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,461.40 : 252,692.10 = 68,588.40 : x
  2. Step 2: Convert to fraction form
    168,461.40/252,692.10 = 68,588.40/x
  3. Step 3: Cross multiply
    168,461.40x = 252,692.10 × 68,588.40
  4. Step 4: Simplify right side
    168,461.40x = 17,331,746,831.64
  5. Step 5: Solve for x
    x = 17,331,746,831.64/168,461.40
  6. Step 6: Final answer
    x = 102,882.60

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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.