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Finding the Fourth Proportional to 1,927,212.94, 2,889,921.93 and 862,263.82

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Solution

The fourth proportional to 1,927,212.94, 2,889,921.93 and 862,263.82 is: 1,292,994.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927,212.94 : 2,889,921.93 = 862,263.82 : x
  2. Step 2: Convert to fraction form
    1,927,212.94/2,889,921.93 = 862,263.82/x
  3. Step 3: Cross multiply
    1,927,212.94x = 2,889,921.93 × 862,263.82
  4. Step 4: Simplify right side
    1,927,212.94x = 2,491,875,122,863.57
  5. Step 5: Solve for x
    x = 2,491,875,122,863.57/1,927,212.94
  6. Step 6: Final answer
    x = 1,292,994.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.