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Finding the Fourth Proportional to 469,428.48, 647,811.63 and 254,568.48

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Solution

The fourth proportional to 469,428.48, 647,811.63 and 254,568.48 is: 351,304.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,428.48 : 647,811.63 = 254,568.48 : x
  2. Step 2: Convert to fraction form
    469,428.48/647,811.63 = 254,568.48/x
  3. Step 3: Cross multiply
    469,428.48x = 647,811.63 × 254,568.48
  4. Step 4: Simplify right side
    469,428.48x = 164,912,421,975.42
  5. Step 5: Solve for x
    x = 164,912,421,975.42/469,428.48
  6. Step 6: Final answer
    x = 351,304.68

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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.