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Finding the Fourth Proportional to 118,679.13, 163,776.96 and 64,964.16

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Solution

The fourth proportional to 118,679.13, 163,776.96 and 64,964.16 is: 89,650.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,679.13 : 163,776.96 = 64,964.16 : x
  2. Step 2: Convert to fraction form
    118,679.13/163,776.96 = 64,964.16/x
  3. Step 3: Cross multiply
    118,679.13x = 163,776.96 × 64,964.16
  4. Step 4: Simplify right side
    118,679.13x = 10,639,632,633.75
  5. Step 5: Solve for x
    x = 10,639,632,633.75/118,679.13
  6. Step 6: Final answer
    x = 89,650.41

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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.