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Finding the Fourth Proportional to 1,669,881.56, 2,304,441.02 and 905,935.13

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Solution

The fourth proportional to 1,669,881.56, 2,304,441.02 and 905,935.13 is: 1,250,192.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669,881.56 : 2,304,441.02 = 905,935.13 : x
  2. Step 2: Convert to fraction form
    1,669,881.56/2,304,441.02 = 905,935.13/x
  3. Step 3: Cross multiply
    1,669,881.56x = 2,304,441.02 × 905,935.13
  4. Step 4: Simplify right side
    1,669,881.56x = 2,087,674,058,979.15
  5. Step 5: Solve for x
    x = 2,087,674,058,979.15/1,669,881.56
  6. Step 6: Final answer
    x = 1,250,192.89

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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.