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Finding the Fourth Proportional to 122,280.90, 171,504.30 and 122,280.90

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Solution

The fourth proportional to 122,280.90, 171,504.30 and 122,280.90 is: 171,504.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,280.90 : 171,504.30 = 122,280.90 : x
  2. Step 2: Convert to fraction form
    122,280.90/171,504.30 = 122,280.90/x
  3. Step 3: Cross multiply
    122,280.90x = 171,504.30 × 122,280.90
  4. Step 4: Simplify right side
    122,280.90x = 20,971,700,157.87
  5. Step 5: Solve for x
    x = 20,971,700,157.87/122,280.90
  6. Step 6: Final answer
    x = 171,504.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.