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Finding the Fourth Proportional to 48,858.40, 73,287.60 and 45,905.95

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Solution

The fourth proportional to 48,858.40, 73,287.60 and 45,905.95 is: 68,858.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,858.40 : 73,287.60 = 45,905.95 : x
  2. Step 2: Convert to fraction form
    48,858.40/73,287.60 = 45,905.95/x
  3. Step 3: Cross multiply
    48,858.40x = 73,287.60 × 45,905.95
  4. Step 4: Simplify right side
    48,858.40x = 3,364,336,901.22
  5. Step 5: Solve for x
    x = 3,364,336,901.22/48,858.40
  6. Step 6: Final answer
    x = 68,858.93

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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.