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Finding the Fourth Proportional to 448,661, 619,195.92 and 247,457

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Solution

The fourth proportional to 448,661, 619,195.92 and 247,457 is: 341,514.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,661 : 619,195.92 = 247,457 : x
  2. Step 2: Convert to fraction form
    448,661/619,195.92 = 247,457/x
  3. Step 3: Cross multiply
    448,661x = 619,195.92 × 247,457
  4. Step 4: Simplify right side
    448,661x = 153,224,364,775.44
  5. Step 5: Solve for x
    x = 153,224,364,775.44/448,661
  6. Step 6: Final answer
    x = 341,514.78

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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.