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Finding the Fourth Proportional to 293,115.60, 439,819.20 and 115,628.40

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Solution

The fourth proportional to 293,115.60, 439,819.20 and 115,628.40 is: 173,500.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,115.60 : 439,819.20 = 115,628.40 : x
  2. Step 2: Convert to fraction form
    293,115.60/439,819.20 = 115,628.40/x
  3. Step 3: Cross multiply
    293,115.60x = 439,819.20 × 115,628.40
  4. Step 4: Simplify right side
    293,115.60x = 50,855,590,385.28
  5. Step 5: Solve for x
    x = 50,855,590,385.28/293,115.60
  6. Step 6: Final answer
    x = 173,500.12

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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.