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Finding the Fourth Proportional to 117,809.40, 176,714.10 and 51,238.20

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Solution

The fourth proportional to 117,809.40, 176,714.10 and 51,238.20 is: 76,857.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,809.40 : 176,714.10 = 51,238.20 : x
  2. Step 2: Convert to fraction form
    117,809.40/176,714.10 = 51,238.20/x
  3. Step 3: Cross multiply
    117,809.40x = 176,714.10 × 51,238.20
  4. Step 4: Simplify right side
    117,809.40x = 9,054,512,398.62
  5. Step 5: Solve for x
    x = 9,054,512,398.62/117,809.40
  6. Step 6: Final answer
    x = 76,857.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.