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Finding the Fourth Proportional to 1,929,561.82, 2,662,369.41 and 1,113,592.12

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Solution

The fourth proportional to 1,929,561.82, 2,662,369.41 and 1,113,592.12 is: 1,536,511.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929,561.82 : 2,662,369.41 = 1,113,592.12 : x
  2. Step 2: Convert to fraction form
    1,929,561.82/2,662,369.41 = 1,113,592.12/x
  3. Step 3: Cross multiply
    1,929,561.82x = 2,662,369.41 × 1,113,592.12
  4. Step 4: Simplify right side
    1,929,561.82x = 2,964,793,586,761.14
  5. Step 5: Solve for x
    x = 2,964,793,586,761.14/1,929,561.82
  6. Step 6: Final answer
    x = 1,536,511.33

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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.