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Finding the Fourth Proportional to 111,620.60, 167,430.90 and 64,926.20

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Solution

The fourth proportional to 111,620.60, 167,430.90 and 64,926.20 is: 97,389.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,620.60 : 167,430.90 = 64,926.20 : x
  2. Step 2: Convert to fraction form
    111,620.60/167,430.90 = 64,926.20/x
  3. Step 3: Cross multiply
    111,620.60x = 167,430.90 × 64,926.20
  4. Step 4: Simplify right side
    111,620.60x = 10,870,652,099.58
  5. Step 5: Solve for x
    x = 10,870,652,099.58/111,620.60
  6. Step 6: Final answer
    x = 97,389.30

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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.