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Finding the Fourth Proportional to 140,305.34, 193,614.16 and 76,630.84

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Solution

The fourth proportional to 140,305.34, 193,614.16 and 76,630.84 is: 105,746.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,305.34 : 193,614.16 = 76,630.84 : x
  2. Step 2: Convert to fraction form
    140,305.34/193,614.16 = 76,630.84/x
  3. Step 3: Cross multiply
    140,305.34x = 193,614.16 × 76,630.84
  4. Step 4: Simplify right side
    140,305.34x = 14,836,814,849.50
  5. Step 5: Solve for x
    x = 14,836,814,849.50/140,305.34
  6. Step 6: Final answer
    x = 105,746.61

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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.