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Finding the Fourth Proportional to 109,648.44, 151,303.95 and 61,892.60

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Solution

The fourth proportional to 109,648.44, 151,303.95 and 61,892.60 is: 85,405.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,648.44 : 151,303.95 = 61,892.60 : x
  2. Step 2: Convert to fraction form
    109,648.44/151,303.95 = 61,892.60/x
  3. Step 3: Cross multiply
    109,648.44x = 151,303.95 × 61,892.60
  4. Step 4: Simplify right side
    109,648.44x = 9,364,594,099.25
  5. Step 5: Solve for x
    x = 9,364,594,099.25/109,648.44
  6. Step 6: Final answer
    x = 85,405.63

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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.