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Finding the Fourth Proportional to 123,423.15, 185,134.74 and 29,928.90

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Solution

The fourth proportional to 123,423.15, 185,134.74 and 29,928.90 is: 44,893.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,423.15 : 185,134.74 = 29,928.90 : x
  2. Step 2: Convert to fraction form
    123,423.15/185,134.74 = 29,928.90/x
  3. Step 3: Cross multiply
    123,423.15x = 185,134.74 × 29,928.90
  4. Step 4: Simplify right side
    123,423.15x = 5,540,879,119.99
  5. Step 5: Solve for x
    x = 5,540,879,119.99/123,423.15
  6. Step 6: Final answer
    x = 44,893.35

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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.