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Finding the Fourth Proportional to 169,431.56, 254,104.68 and 69,619.32

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Solution

The fourth proportional to 169,431.56, 254,104.68 and 69,619.32 is: 104,411.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,431.56 : 254,104.68 = 69,619.32 : x
  2. Step 2: Convert to fraction form
    169,431.56/254,104.68 = 69,619.32/x
  3. Step 3: Cross multiply
    169,431.56x = 254,104.68 × 69,619.32
  4. Step 4: Simplify right side
    169,431.56x = 17,690,595,030.42
  5. Step 5: Solve for x
    x = 17,690,595,030.42/169,431.56
  6. Step 6: Final answer
    x = 104,411.45

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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.