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Finding the Fourth Proportional to 113,659.78, 156,917.70 and 101,049.64

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Solution

The fourth proportional to 113,659.78, 156,917.70 and 101,049.64 is: 139,508.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,659.78 : 156,917.70 = 101,049.64 : x
  2. Step 2: Convert to fraction form
    113,659.78/156,917.70 = 101,049.64/x
  3. Step 3: Cross multiply
    113,659.78x = 156,917.70 × 101,049.64
  4. Step 4: Simplify right side
    113,659.78x = 15,856,477,094.63
  5. Step 5: Solve for x
    x = 15,856,477,094.63/113,659.78
  6. Step 6: Final answer
    x = 139,508.25

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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.