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Finding the Fourth Proportional to 313,385.20, 470,279.40 and 173,244.40

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Solution

The fourth proportional to 313,385.20, 470,279.40 and 173,244.40 is: 259,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,385.20 : 470,279.40 = 173,244.40 : x
  2. Step 2: Convert to fraction form
    313,385.20/470,279.40 = 173,244.40/x
  3. Step 3: Cross multiply
    313,385.20x = 470,279.40 × 173,244.40
  4. Step 4: Simplify right side
    313,385.20x = 81,473,272,485.36
  5. Step 5: Solve for x
    x = 81,473,272,485.36/313,385.20
  6. Step 6: Final answer
    x = 259,978.05

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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.