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Finding the Fourth Proportional to 103,821.30, 155,674.35 and 41,421.30

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Solution

The fourth proportional to 103,821.30, 155,674.35 and 41,421.30 is: 62,108.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,821.30 : 155,674.35 = 41,421.30 : x
  2. Step 2: Convert to fraction form
    103,821.30/155,674.35 = 41,421.30/x
  3. Step 3: Cross multiply
    103,821.30x = 155,674.35 × 41,421.30
  4. Step 4: Simplify right side
    103,821.30x = 6,448,233,953.66
  5. Step 5: Solve for x
    x = 6,448,233,953.66/103,821.30
  6. Step 6: Final answer
    x = 62,108.97

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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.