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Finding the Fourth Proportional to 448,618.95, 619,301.46 and 276,567.66

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Solution

The fourth proportional to 448,618.95, 619,301.46 and 276,567.66 is: 381,791.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,618.95 : 619,301.46 = 276,567.66 : x
  2. Step 2: Convert to fraction form
    448,618.95/619,301.46 = 276,567.66/x
  3. Step 3: Cross multiply
    448,618.95x = 619,301.46 × 276,567.66
  4. Step 4: Simplify right side
    448,618.95x = 171,278,756,663.91
  5. Step 5: Solve for x
    x = 171,278,756,663.91/448,618.95
  6. Step 6: Final answer
    x = 381,791.18

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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.