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Finding the Fourth Proportional to 117,193.10, 161,714.91 and 65,500.65

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Solution

The fourth proportional to 117,193.10, 161,714.91 and 65,500.65 is: 90,384.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,193.10 : 161,714.91 = 65,500.65 : x
  2. Step 2: Convert to fraction form
    117,193.10/161,714.91 = 65,500.65/x
  3. Step 3: Cross multiply
    117,193.10x = 161,714.91 × 65,500.65
  4. Step 4: Simplify right side
    117,193.10x = 10,592,431,965.32
  5. Step 5: Solve for x
    x = 10,592,431,965.32/117,193.10
  6. Step 6: Final answer
    x = 90,384.44

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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.