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Finding the Fourth Proportional to 111,245.40, 166,916.10 and 64,538.20

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Solution

The fourth proportional to 111,245.40, 166,916.10 and 64,538.20 is: 96,835.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,245.40 : 166,916.10 = 64,538.20 : x
  2. Step 2: Convert to fraction form
    111,245.40/166,916.10 = 64,538.20/x
  3. Step 3: Cross multiply
    111,245.40x = 166,916.10 × 64,538.20
  4. Step 4: Simplify right side
    111,245.40x = 10,772,464,645.02
  5. Step 5: Solve for x
    x = 10,772,464,645.02/111,245.40
  6. Step 6: Final answer
    x = 96,835.15

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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.