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Finding the Fourth Proportional to 111,965.40, 167,948.10 and 64,726.20

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Solution

The fourth proportional to 111,965.40, 167,948.10 and 64,726.20 is: 97,089.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,965.40 : 167,948.10 = 64,726.20 : x
  2. Step 2: Convert to fraction form
    111,965.40/167,948.10 = 64,726.20/x
  3. Step 3: Cross multiply
    111,965.40x = 167,948.10 × 64,726.20
  4. Step 4: Simplify right side
    111,965.40x = 10,870,642,310.22
  5. Step 5: Solve for x
    x = 10,870,642,310.22/111,965.40
  6. Step 6: Final answer
    x = 97,089.30

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Similar ratio
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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.