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Finding the Fourth Proportional to 293,131.40, 439,630.64 and 148,891

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Solution

The fourth proportional to 293,131.40, 439,630.64 and 148,891 is: 223,302.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,131.40 : 439,630.64 = 148,891 : x
  2. Step 2: Convert to fraction form
    293,131.40/439,630.64 = 148,891/x
  3. Step 3: Cross multiply
    293,131.40x = 439,630.64 × 148,891
  4. Step 4: Simplify right side
    293,131.40x = 65,457,045,620.24
  5. Step 5: Solve for x
    x = 65,457,045,620.24/293,131.40
  6. Step 6: Final answer
    x = 223,302.74

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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.