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Finding the Fourth Proportional to 907,374.78, 1,361,062.17 and 276,288.60

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Solution

The fourth proportional to 907,374.78, 1,361,062.17 and 276,288.60 is: 414,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,374.78 : 1,361,062.17 = 276,288.60 : x
  2. Step 2: Convert to fraction form
    907,374.78/1,361,062.17 = 276,288.60/x
  3. Step 3: Cross multiply
    907,374.78x = 1,361,062.17 × 276,288.60
  4. Step 4: Simplify right side
    907,374.78x = 376,045,961,462.26
  5. Step 5: Solve for x
    x = 376,045,961,462.26/907,374.78
  6. Step 6: Final answer
    x = 414,432.90

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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.