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Finding the Fourth Proportional to 1,191,978, 1,644,929.66 and 655,434

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Solution

The fourth proportional to 1,191,978, 1,644,929.66 and 655,434 is: 904,498.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,978 : 1,644,929.66 = 655,434 : x
  2. Step 2: Convert to fraction form
    1,191,978/1,644,929.66 = 655,434/x
  3. Step 3: Cross multiply
    1,191,978x = 1,644,929.66 × 655,434
  4. Step 4: Simplify right side
    1,191,978x = 1,078,142,826,772.44
  5. Step 5: Solve for x
    x = 1,078,142,826,772.44/1,191,978
  6. Step 6: Final answer
    x = 904,498.93

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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.