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Finding the Fourth Proportional to 113,649.88, 156,798.75 and 73,390.85

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Solution

The fourth proportional to 113,649.88, 156,798.75 and 73,390.85 is: 101,254.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,649.88 : 156,798.75 = 73,390.85 : x
  2. Step 2: Convert to fraction form
    113,649.88/156,798.75 = 73,390.85/x
  3. Step 3: Cross multiply
    113,649.88x = 156,798.75 × 73,390.85
  4. Step 4: Simplify right side
    113,649.88x = 11,507,593,933.43
  5. Step 5: Solve for x
    x = 11,507,593,933.43/113,649.88
  6. Step 6: Final answer
    x = 101,254.79

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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.