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Finding the Fourth Proportional to 76,872.63, 106,150.95 and 48,241.92

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Solution

The fourth proportional to 76,872.63, 106,150.95 and 48,241.92 is: 66,615.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,872.63 : 106,150.95 = 48,241.92 : x
  2. Step 2: Convert to fraction form
    76,872.63/106,150.95 = 48,241.92/x
  3. Step 3: Cross multiply
    76,872.63x = 106,150.95 × 48,241.92
  4. Step 4: Simplify right side
    76,872.63x = 5,120,925,637.82
  5. Step 5: Solve for x
    x = 5,120,925,637.82/76,872.63
  6. Step 6: Final answer
    x = 66,615.72

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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.