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Finding the Fourth Proportional to 554,892.40, 765,754.08 and 313,185.16

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Solution

The fourth proportional to 554,892.40, 765,754.08 and 313,185.16 is: 432,196.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,892.40 : 765,754.08 = 313,185.16 : x
  2. Step 2: Convert to fraction form
    554,892.40/765,754.08 = 313,185.16/x
  3. Step 3: Cross multiply
    554,892.40x = 765,754.08 × 313,185.16
  4. Step 4: Simplify right side
    554,892.40x = 239,822,814,065.45
  5. Step 5: Solve for x
    x = 239,822,814,065.45/554,892.40
  6. Step 6: Final answer
    x = 432,196.97

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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.