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Finding the Fourth Proportional to 102,993.80, 154,490.70 and 73,250.60

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Solution

The fourth proportional to 102,993.80, 154,490.70 and 73,250.60 is: 109,875.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,993.80 : 154,490.70 = 73,250.60 : x
  2. Step 2: Convert to fraction form
    102,993.80/154,490.70 = 73,250.60/x
  3. Step 3: Cross multiply
    102,993.80x = 154,490.70 × 73,250.60
  4. Step 4: Simplify right side
    102,993.80x = 11,316,536,469.42
  5. Step 5: Solve for x
    x = 11,316,536,469.42/102,993.80
  6. Step 6: Final answer
    x = 109,875.90

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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.