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Finding the Fourth Proportional to 168,915.65, 253,309.28 and 69,022.26

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Solution

The fourth proportional to 168,915.65, 253,309.28 and 69,022.26 is: 103,507.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,915.65 : 253,309.28 = 69,022.26 : x
  2. Step 2: Convert to fraction form
    168,915.65/253,309.28 = 69,022.26/x
  3. Step 3: Cross multiply
    168,915.65x = 253,309.28 × 69,022.26
  4. Step 4: Simplify right side
    168,915.65x = 17,483,978,639.46
  5. Step 5: Solve for x
    x = 17,483,978,639.46/168,915.65
  6. Step 6: Final answer
    x = 103,507.16

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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.