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Finding the Fourth Proportional to 554,872.74, 765,727.02 and 313,165.50

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Solution

The fourth proportional to 554,872.74, 765,727.02 and 313,165.50 is: 432,169.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,872.74 : 765,727.02 = 313,165.50 : x
  2. Step 2: Convert to fraction form
    554,872.74/765,727.02 = 313,165.50/x
  3. Step 3: Cross multiply
    554,872.74x = 765,727.02 × 313,165.50
  4. Step 4: Simplify right side
    554,872.74x = 239,799,285,081.81
  5. Step 5: Solve for x
    x = 239,799,285,081.81/554,872.74
  6. Step 6: Final answer
    x = 432,169.88

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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.