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Finding the Fourth Proportional to 171,644.10, 257,466.15 and 156,437.70

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Solution

The fourth proportional to 171,644.10, 257,466.15 and 156,437.70 is: 234,656.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,644.10 : 257,466.15 = 156,437.70 : x
  2. Step 2: Convert to fraction form
    171,644.10/257,466.15 = 156,437.70/x
  3. Step 3: Cross multiply
    171,644.10x = 257,466.15 × 156,437.70
  4. Step 4: Simplify right side
    171,644.10x = 40,277,412,333.86
  5. Step 5: Solve for x
    x = 40,277,412,333.86/171,644.10
  6. Step 6: Final answer
    x = 234,656.55

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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.