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Finding the Fourth Proportional to 78,568.44, 108,464.62 and 60,623.16

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Solution

The fourth proportional to 78,568.44, 108,464.62 and 60,623.16 is: 83,690.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,568.44 : 108,464.62 = 60,623.16 : x
  2. Step 2: Convert to fraction form
    78,568.44/108,464.62 = 60,623.16/x
  3. Step 3: Cross multiply
    78,568.44x = 108,464.62 × 60,623.16
  4. Step 4: Simplify right side
    78,568.44x = 6,575,468,012.60
  5. Step 5: Solve for x
    x = 6,575,468,012.60/78,568.44
  6. Step 6: Final answer
    x = 83,690.96

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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.