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Finding the Fourth Proportional to 449,166.60, 674,009.10 and 168,712.20

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Solution

The fourth proportional to 449,166.60, 674,009.10 and 168,712.20 is: 253,165.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,166.60 : 674,009.10 = 168,712.20 : x
  2. Step 2: Convert to fraction form
    449,166.60/674,009.10 = 168,712.20/x
  3. Step 3: Cross multiply
    449,166.60x = 674,009.10 × 168,712.20
  4. Step 4: Simplify right side
    449,166.60x = 113,713,558,081.02
  5. Step 5: Solve for x
    x = 113,713,558,081.02/449,166.60
  6. Step 6: Final answer
    x = 253,165.66

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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.