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Finding the Fourth Proportional to 1,605,816, 2,216,026.08 and 890,424

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Solution

The fourth proportional to 1,605,816, 2,216,026.08 and 890,424 is: 1,228,785.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605,816 : 2,216,026.08 = 890,424 : x
  2. Step 2: Convert to fraction form
    1,605,816/2,216,026.08 = 890,424/x
  3. Step 3: Cross multiply
    1,605,816x = 2,216,026.08 × 890,424
  4. Step 4: Simplify right side
    1,605,816x = 1,973,202,806,257.92
  5. Step 5: Solve for x
    x = 1,973,202,806,257.92/1,605,816
  6. Step 6: Final answer
    x = 1,228,785.12

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1.5x scale

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.