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Finding the Fourth Proportional to 251,633.40, 347,247.72 and 136,907.16

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Solution

The fourth proportional to 251,633.40, 347,247.72 and 136,907.16 is: 188,928.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,633.40 : 347,247.72 = 136,907.16 : x
  2. Step 2: Convert to fraction form
    251,633.40/347,247.72 = 136,907.16/x
  3. Step 3: Cross multiply
    251,633.40x = 347,247.72 × 136,907.16
  4. Step 4: Simplify right side
    251,633.40x = 47,540,699,161.68
  5. Step 5: Solve for x
    x = 47,540,699,161.68/251,633.40
  6. Step 6: Final answer
    x = 188,928.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.