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Finding the Fourth Proportional to 69,802.66, 104,643.51 and 28,222.66

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Solution

The fourth proportional to 69,802.66, 104,643.51 and 28,222.66 is: 42,309.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,802.66 : 104,643.51 = 28,222.66 : x
  2. Step 2: Convert to fraction form
    69,802.66/104,643.51 = 28,222.66/x
  3. Step 3: Cross multiply
    69,802.66x = 104,643.51 × 28,222.66
  4. Step 4: Simplify right side
    69,802.66x = 2,953,318,203.94
  5. Step 5: Solve for x
    x = 2,953,318,203.94/69,802.66
  6. Step 6: Final answer
    x = 42,309.54

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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.