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Finding the Fourth Proportional to 1,669,862.77, 2,304,411.45 and 905,916.13

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Solution

The fourth proportional to 1,669,862.77, 2,304,411.45 and 905,916.13 is: 1,250,164.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669,862.77 : 2,304,411.45 = 905,916.13 : x
  2. Step 2: Convert to fraction form
    1,669,862.77/2,304,411.45 = 905,916.13/x
  3. Step 3: Cross multiply
    1,669,862.77x = 2,304,411.45 × 905,916.13
  4. Step 4: Simplify right side
    1,669,862.77x = 2,087,603,502,711.69
  5. Step 5: Solve for x
    x = 2,087,603,502,711.69/1,669,862.77
  6. Step 6: Final answer
    x = 1,250,164.71

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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.