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Finding the Fourth Proportional to 978,059.48, 1,466,964.45 and 378,610.47

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Solution

The fourth proportional to 978,059.48, 1,466,964.45 and 378,610.47 is: 567,867.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,059.48 : 1,466,964.45 = 378,610.47 : x
  2. Step 2: Convert to fraction form
    978,059.48/1,466,964.45 = 378,610.47/x
  3. Step 3: Cross multiply
    978,059.48x = 1,466,964.45 × 378,610.47
  4. Step 4: Simplify right side
    978,059.48x = 555,408,099,887.79
  5. Step 5: Solve for x
    x = 555,408,099,887.79/978,059.48
  6. Step 6: Final answer
    x = 567,867.41

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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.