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Finding the Fourth Proportional to 1,375,611.05, 1,895,220.56 and 1,064,443.77

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Solution

The fourth proportional to 1,375,611.05, 1,895,220.56 and 1,064,443.77 is: 1,466,516.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,611.05 : 1,895,220.56 = 1,064,443.77 : x
  2. Step 2: Convert to fraction form
    1,375,611.05/1,895,220.56 = 1,064,443.77/x
  3. Step 3: Cross multiply
    1,375,611.05x = 1,895,220.56 × 1,064,443.77
  4. Step 4: Simplify right side
    1,375,611.05x = 2,017,355,712,545.69
  5. Step 5: Solve for x
    x = 2,017,355,712,545.69/1,375,611.05
  6. Step 6: Final answer
    x = 1,466,516.08

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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.