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Finding the Fourth Proportional to 351,493.45, 485,061.45 and 190,348.74

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Solution

The fourth proportional to 351,493.45, 485,061.45 and 190,348.74 is: 262,681.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,493.45 : 485,061.45 = 190,348.74 : x
  2. Step 2: Convert to fraction form
    351,493.45/485,061.45 = 190,348.74/x
  3. Step 3: Cross multiply
    351,493.45x = 485,061.45 × 190,348.74
  4. Step 4: Simplify right side
    351,493.45x = 92,330,835,116.27
  5. Step 5: Solve for x
    x = 92,330,835,116.27/351,493.45
  6. Step 6: Final answer
    x = 262,681.53

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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.