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Finding the Fourth Proportional to 351,709.65, 485,358.66 and 190,569.06

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Solution

The fourth proportional to 351,709.65, 485,358.66 and 190,569.06 is: 262,984.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,709.65 : 485,358.66 = 190,569.06 : x
  2. Step 2: Convert to fraction form
    351,709.65/485,358.66 = 190,569.06/x
  3. Step 3: Cross multiply
    351,709.65x = 485,358.66 × 190,569.06
  4. Step 4: Simplify right side
    351,709.65x = 92,494,343,599.06
  5. Step 5: Solve for x
    x = 92,494,343,599.06/351,709.65
  6. Step 6: Final answer
    x = 262,984.95

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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.