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Finding the Fourth Proportional to 171,812.30, 257,614.90 and 77,025.34

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Solution

The fourth proportional to 171,812.30, 257,614.90 and 77,025.34 is: 115,491.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,812.30 : 257,614.90 = 77,025.34 : x
  2. Step 2: Convert to fraction form
    171,812.30/257,614.90 = 77,025.34/x
  3. Step 3: Cross multiply
    171,812.30x = 257,614.90 × 77,025.34
  4. Step 4: Simplify right side
    171,812.30x = 19,842,874,424.97
  5. Step 5: Solve for x
    x = 19,842,874,424.97/171,812.30
  6. Step 6: Final answer
    x = 115,491.58

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1.5x scale

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.