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Finding the Fourth Proportional to 113,599.60, 156,768.05 and 65,197.66

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Solution

The fourth proportional to 113,599.60, 156,768.05 and 65,197.66 is: 89,973.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,599.60 : 156,768.05 = 65,197.66 : x
  2. Step 2: Convert to fraction form
    113,599.60/156,768.05 = 65,197.66/x
  3. Step 3: Cross multiply
    113,599.60x = 156,768.05 × 65,197.66
  4. Step 4: Simplify right side
    113,599.60x = 10,220,910,022.76
  5. Step 5: Solve for x
    x = 10,220,910,022.76/113,599.60
  6. Step 6: Final answer
    x = 89,973.12

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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.