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Finding the Fourth Proportional to 101,529, 140,090.58 and 65,714.04

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Solution

The fourth proportional to 101,529, 140,090.58 and 65,714.04 is: 90,672.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,529 : 140,090.58 = 65,714.04 : x
  2. Step 2: Convert to fraction form
    101,529/140,090.58 = 65,714.04/x
  3. Step 3: Cross multiply
    101,529x = 140,090.58 × 65,714.04
  4. Step 4: Simplify right side
    101,529x = 9,205,917,977.74
  5. Step 5: Solve for x
    x = 9,205,917,977.74/101,529
  6. Step 6: Final answer
    x = 90,672.79

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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.