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Finding the Fourth Proportional to 619,009.78, 854,222.66 and 347,076.83

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Solution

The fourth proportional to 619,009.78, 854,222.66 and 347,076.83 is: 478,959.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,009.78 : 854,222.66 = 347,076.83 : x
  2. Step 2: Convert to fraction form
    619,009.78/854,222.66 = 347,076.83/x
  3. Step 3: Cross multiply
    619,009.78x = 854,222.66 × 347,076.83
  4. Step 4: Simplify right side
    619,009.78x = 296,480,888,675.86
  5. Step 5: Solve for x
    x = 296,480,888,675.86/619,009.78
  6. Step 6: Final answer
    x = 478,959.95

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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.