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Finding the Fourth Proportional to 291,405.80, 437,108.70 and 173,016.20

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Solution

The fourth proportional to 291,405.80, 437,108.70 and 173,016.20 is: 259,524.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,405.80 : 437,108.70 = 173,016.20 : x
  2. Step 2: Convert to fraction form
    291,405.80/437,108.70 = 173,016.20/x
  3. Step 3: Cross multiply
    291,405.80x = 437,108.70 × 173,016.20
  4. Step 4: Simplify right side
    291,405.80x = 75,626,886,260.94
  5. Step 5: Solve for x
    x = 75,626,886,260.94/291,405.80
  6. Step 6: Final answer
    x = 259,524.30

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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.