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Finding the Fourth Proportional to 171,598.46, 257,244.59 and 87,311.48

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Solution

The fourth proportional to 171,598.46, 257,244.59 and 87,311.48 is: 130,889.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,598.46 : 257,244.59 = 87,311.48 : x
  2. Step 2: Convert to fraction form
    171,598.46/257,244.59 = 87,311.48/x
  3. Step 3: Cross multiply
    171,598.46x = 257,244.59 × 87,311.48
  4. Step 4: Simplify right side
    171,598.46x = 22,460,404,806.95
  5. Step 5: Solve for x
    x = 22,460,404,806.95/171,598.46
  6. Step 6: Final answer
    x = 130,889.32

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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.