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Finding the Fourth Proportional to 113,599.85, 156,765.69 and 61,917.39

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Solution

The fourth proportional to 113,599.85, 156,765.69 and 61,917.39 is: 85,444.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,599.85 : 156,765.69 = 61,917.39 : x
  2. Step 2: Convert to fraction form
    113,599.85/156,765.69 = 61,917.39/x
  3. Step 3: Cross multiply
    113,599.85x = 156,765.69 × 61,917.39
  4. Step 4: Simplify right side
    113,599.85x = 9,706,522,366.35
  5. Step 5: Solve for x
    x = 9,706,522,366.35/113,599.85
  6. Step 6: Final answer
    x = 85,444.86

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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.