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Finding the Fourth Proportional to 2,602,338.78, 3,904,842.60 and 1,255,649.88

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Solution

The fourth proportional to 2,602,338.78, 3,904,842.60 and 1,255,649.88 is: 1,884,118.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,602,338.78 : 3,904,842.60 = 1,255,649.88 : x
  2. Step 2: Convert to fraction form
    2,602,338.78/3,904,842.60 = 1,255,649.88/x
  3. Step 3: Cross multiply
    2,602,338.78x = 3,904,842.60 × 1,255,649.88
  4. Step 4: Simplify right side
    2,602,338.78x = 4,903,115,142,108.89
  5. Step 5: Solve for x
    x = 4,903,115,142,108.89/2,602,338.78
  6. Step 6: Final answer
    x = 1,884,118.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.