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Finding the Fourth Proportional to 76,375.60, 105,393.56 and 46,143.05

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Solution

The fourth proportional to 76,375.60, 105,393.56 and 46,143.05 is: 63,674.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,375.60 : 105,393.56 = 46,143.05 : x
  2. Step 2: Convert to fraction form
    76,375.60/105,393.56 = 46,143.05/x
  3. Step 3: Cross multiply
    76,375.60x = 105,393.56 × 46,143.05
  4. Step 4: Simplify right side
    76,375.60x = 4,863,180,078.04
  5. Step 5: Solve for x
    x = 4,863,180,078.04/76,375.60
  6. Step 6: Final answer
    x = 63,674.53

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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.