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Finding the Fourth Proportional to 171,606.60, 257,431.77 and 66,411.90

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Solution

The fourth proportional to 171,606.60, 257,431.77 and 66,411.90 is: 99,626.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,606.60 : 257,431.77 = 66,411.90 : x
  2. Step 2: Convert to fraction form
    171,606.60/257,431.77 = 66,411.90/x
  3. Step 3: Cross multiply
    171,606.60x = 257,431.77 × 66,411.90
  4. Step 4: Simplify right side
    171,606.60x = 17,096,532,966.06
  5. Step 5: Solve for x
    x = 17,096,532,966.06/171,606.60
  6. Step 6: Final answer
    x = 99,626.31

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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.