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Finding the Fourth Proportional to 1,203,161, 1,660,362.18 and 666,617

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Solution

The fourth proportional to 1,203,161, 1,660,362.18 and 666,617 is: 919,931.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,161 : 1,660,362.18 = 666,617 : x
  2. Step 2: Convert to fraction form
    1,203,161/1,660,362.18 = 666,617/x
  3. Step 3: Cross multiply
    1,203,161x = 1,660,362.18 × 666,617
  4. Step 4: Simplify right side
    1,203,161x = 1,106,825,655,345.06
  5. Step 5: Solve for x
    x = 1,106,825,655,345.06/1,203,161
  6. Step 6: Final answer
    x = 919,931.46

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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.