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Finding the Fourth Proportional to 171,954.40, 257,557.64 and 105,192.60

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Solution

The fourth proportional to 171,954.40, 257,557.64 and 105,192.60 is: 157,560.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,954.40 : 257,557.64 = 105,192.60 : x
  2. Step 2: Convert to fraction form
    171,954.40/257,557.64 = 105,192.60/x
  3. Step 3: Cross multiply
    171,954.40x = 257,557.64 × 105,192.60
  4. Step 4: Simplify right side
    171,954.40x = 27,093,157,801.46
  5. Step 5: Solve for x
    x = 27,093,157,801.46/171,954.40
  6. Step 6: Final answer
    x = 157,560.13

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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.