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Finding the Fourth Proportional to 139,546.70, 195,715.30 and 139,546.70

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Solution

The fourth proportional to 139,546.70, 195,715.30 and 139,546.70 is: 195,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,546.70 : 195,715.30 = 139,546.70 : x
  2. Step 2: Convert to fraction form
    139,546.70/195,715.30 = 139,546.70/x
  3. Step 3: Cross multiply
    139,546.70x = 195,715.30 × 139,546.70
  4. Step 4: Simplify right side
    139,546.70x = 27,311,424,254.51
  5. Step 5: Solve for x
    x = 27,311,424,254.51/139,546.70
  6. Step 6: Final answer
    x = 195,715.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.