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Finding the Fourth Proportional to 1,754,297.92, 2,420,796 and 990,426.88

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Solution

The fourth proportional to 1,754,297.92, 2,420,796 and 990,426.88 is: 1,366,712.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,754,297.92 : 2,420,796 = 990,426.88 : x
  2. Step 2: Convert to fraction form
    1,754,297.92/2,420,796 = 990,426.88/x
  3. Step 3: Cross multiply
    1,754,297.92x = 2,420,796 × 990,426.88
  4. Step 4: Simplify right side
    1,754,297.92x = 2,397,621,429,396.48
  5. Step 5: Solve for x
    x = 2,397,621,429,396.48/1,754,297.92
  6. Step 6: Final answer
    x = 1,366,712.80

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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.