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Finding the Fourth Proportional to 169,343.46, 254,022.21 and 69,433.20

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Solution

The fourth proportional to 169,343.46, 254,022.21 and 69,433.20 is: 104,152.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,343.46 : 254,022.21 = 69,433.20 : x
  2. Step 2: Convert to fraction form
    169,343.46/254,022.21 = 69,433.20/x
  3. Step 3: Cross multiply
    169,343.46x = 254,022.21 × 69,433.20
  4. Step 4: Simplify right side
    169,343.46x = 17,637,574,911.37
  5. Step 5: Solve for x
    x = 17,637,574,911.37/169,343.46
  6. Step 6: Final answer
    x = 104,152.68

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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.