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Finding the Fourth Proportional to 140,714.78, 194,186.70 and 76,184.70

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Solution

The fourth proportional to 140,714.78, 194,186.70 and 76,184.70 is: 105,135.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,714.78 : 194,186.70 = 76,184.70 : x
  2. Step 2: Convert to fraction form
    140,714.78/194,186.70 = 76,184.70/x
  3. Step 3: Cross multiply
    140,714.78x = 194,186.70 × 76,184.70
  4. Step 4: Simplify right side
    140,714.78x = 14,794,055,483.49
  5. Step 5: Solve for x
    x = 14,794,055,483.49/140,714.78
  6. Step 6: Final answer
    x = 105,135.05

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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.