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Finding the Fourth Proportional to 469,888.80, 648,447.17 and 255,028.88

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Solution

The fourth proportional to 469,888.80, 648,447.17 and 255,028.88 is: 351,940.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,888.80 : 648,447.17 = 255,028.88 : x
  2. Step 2: Convert to fraction form
    469,888.80/648,447.17 = 255,028.88/x
  3. Step 3: Cross multiply
    469,888.80x = 648,447.17 × 255,028.88
  4. Step 4: Simplify right side
    469,888.80x = 165,372,750,986.89
  5. Step 5: Solve for x
    x = 165,372,750,986.89/469,888.80
  6. Step 6: Final answer
    x = 351,940.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.