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Finding the Fourth Proportional to 201,340.65, 302,012.79 and 61,099.28

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Solution

The fourth proportional to 201,340.65, 302,012.79 and 61,099.28 is: 91,649.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,340.65 : 302,012.79 = 61,099.28 : x
  2. Step 2: Convert to fraction form
    201,340.65/302,012.79 = 61,099.28/x
  3. Step 3: Cross multiply
    201,340.65x = 302,012.79 × 61,099.28
  4. Step 4: Simplify right side
    201,340.65x = 18,452,762,509.73
  5. Step 5: Solve for x
    x = 18,452,762,509.73/201,340.65
  6. Step 6: Final answer
    x = 91,649.46

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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.