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Finding the Fourth Proportional to 78,451.62, 108,265.86 and 46,652.64

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Solution

The fourth proportional to 78,451.62, 108,265.86 and 46,652.64 is: 64,382.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,451.62 : 108,265.86 = 46,652.64 : x
  2. Step 2: Convert to fraction form
    78,451.62/108,265.86 = 46,652.64/x
  3. Step 3: Cross multiply
    78,451.62x = 108,265.86 × 46,652.64
  4. Step 4: Simplify right side
    78,451.62x = 5,050,888,190.87
  5. Step 5: Solve for x
    x = 5,050,888,190.87/78,451.62
  6. Step 6: Final answer
    x = 64,382.20

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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.