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Finding the Fourth Proportional to 440,297.15, 660,390.59 and 140,752.88

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Solution

The fourth proportional to 440,297.15, 660,390.59 and 140,752.88 is: 211,111.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,297.15 : 660,390.59 = 140,752.88 : x
  2. Step 2: Convert to fraction form
    440,297.15/660,390.59 = 140,752.88/x
  3. Step 3: Cross multiply
    440,297.15x = 660,390.59 × 140,752.88
  4. Step 4: Simplify right side
    440,297.15x = 92,951,873,461.68
  5. Step 5: Solve for x
    x = 92,951,873,461.68/440,297.15
  6. Step 6: Final answer
    x = 211,111.69

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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.