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Finding the Fourth Proportional to 78,367.70, 108,149.58 and 46,104.60

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Solution

The fourth proportional to 78,367.70, 108,149.58 and 46,104.60 is: 63,625.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,367.70 : 108,149.58 = 46,104.60 : x
  2. Step 2: Convert to fraction form
    78,367.70/108,149.58 = 46,104.60/x
  3. Step 3: Cross multiply
    78,367.70x = 108,149.58 × 46,104.60
  4. Step 4: Simplify right side
    78,367.70x = 4,986,193,126.07
  5. Step 5: Solve for x
    x = 4,986,193,126.07/78,367.70
  6. Step 6: Final answer
    x = 63,625.62

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1.5x scale

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.