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Finding the Fourth Proportional to 554,891.40, 765,752.70 and 313,184.16

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Solution

The fourth proportional to 554,891.40, 765,752.70 and 313,184.16 is: 432,195.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,891.40 : 765,752.70 = 313,184.16 : x
  2. Step 2: Convert to fraction form
    554,891.40/765,752.70 = 313,184.16/x
  3. Step 3: Cross multiply
    554,891.40x = 765,752.70 × 313,184.16
  4. Step 4: Simplify right side
    554,891.40x = 239,821,616,117.23
  5. Step 5: Solve for x
    x = 239,821,616,117.23/554,891.40
  6. Step 6: Final answer
    x = 432,195.59

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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.