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Finding the Fourth Proportional to 171,235.20, 256,737.60 and 77,692.80

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Solution

The fourth proportional to 171,235.20, 256,737.60 and 77,692.80 is: 116,486.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,235.20 : 256,737.60 = 77,692.80 : x
  2. Step 2: Convert to fraction form
    171,235.20/256,737.60 = 77,692.80/x
  3. Step 3: Cross multiply
    171,235.20x = 256,737.60 × 77,692.80
  4. Step 4: Simplify right side
    171,235.20x = 19,946,663,009.28
  5. Step 5: Solve for x
    x = 19,946,663,009.28/171,235.20
  6. Step 6: Final answer
    x = 116,486.93

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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.