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Finding the Fourth Proportional to 72,609.70, 108,797.64 and 60,945.70

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Solution

The fourth proportional to 72,609.70, 108,797.64 and 60,945.70 is: 91,320.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,609.70 : 108,797.64 = 60,945.70 : x
  2. Step 2: Convert to fraction form
    72,609.70/108,797.64 = 60,945.70/x
  3. Step 3: Cross multiply
    72,609.70x = 108,797.64 × 60,945.70
  4. Step 4: Simplify right side
    72,609.70x = 6,630,748,328.15
  5. Step 5: Solve for x
    x = 6,630,748,328.15/72,609.70
  6. Step 6: Final answer
    x = 91,320.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.