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Finding the Fourth Proportional to 98,494.52, 147,639.60 and 45,860.72

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Solution

The fourth proportional to 98,494.52, 147,639.60 and 45,860.72 is: 68,743.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,494.52 : 147,639.60 = 45,860.72 : x
  2. Step 2: Convert to fraction form
    98,494.52/147,639.60 = 45,860.72/x
  3. Step 3: Cross multiply
    98,494.52x = 147,639.60 × 45,860.72
  4. Step 4: Simplify right side
    98,494.52x = 6,770,858,356.51
  5. Step 5: Solve for x
    x = 6,770,858,356.51/98,494.52
  6. Step 6: Final answer
    x = 68,743.50

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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.