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Finding the Fourth Proportional to 171,202.60, 256,803.90 and 77,890.60

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Solution

The fourth proportional to 171,202.60, 256,803.90 and 77,890.60 is: 116,835.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,202.60 : 256,803.90 = 77,890.60 : x
  2. Step 2: Convert to fraction form
    171,202.60/256,803.90 = 77,890.60/x
  3. Step 3: Cross multiply
    171,202.60x = 256,803.90 × 77,890.60
  4. Step 4: Simplify right side
    171,202.60x = 20,002,609,853.34
  5. Step 5: Solve for x
    x = 20,002,609,853.34/171,202.60
  6. Step 6: Final answer
    x = 116,835.90

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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.