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Finding the Fourth Proportional to 254,066.63, 381,125.45 and 67,078.13

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Solution

The fourth proportional to 254,066.63, 381,125.45 and 67,078.13 is: 100,623.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,066.63 : 381,125.45 = 67,078.13 : x
  2. Step 2: Convert to fraction form
    254,066.63/381,125.45 = 67,078.13/x
  3. Step 3: Cross multiply
    254,066.63x = 381,125.45 × 67,078.13
  4. Step 4: Simplify right side
    254,066.63x = 25,565,180,743.48
  5. Step 5: Solve for x
    x = 25,565,180,743.48/254,066.63
  6. Step 6: Final answer
    x = 100,623.92

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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.