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Finding the Fourth Proportional to 104,418.80, 156,628.20 and 34,281.20

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Solution

The fourth proportional to 104,418.80, 156,628.20 and 34,281.20 is: 51,421.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,418.80 : 156,628.20 = 34,281.20 : x
  2. Step 2: Convert to fraction form
    104,418.80/156,628.20 = 34,281.20/x
  3. Step 3: Cross multiply
    104,418.80x = 156,628.20 × 34,281.20
  4. Step 4: Simplify right side
    104,418.80x = 5,369,402,649.84
  5. Step 5: Solve for x
    x = 5,369,402,649.84/104,418.80
  6. Step 6: Final answer
    x = 51,421.80

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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.