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Finding the Fourth Proportional to 262,105.86, 393,159.09 and 79,738.16

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Solution

The fourth proportional to 262,105.86, 393,159.09 and 79,738.16 is: 119,607.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,105.86 : 393,159.09 = 79,738.16 : x
  2. Step 2: Convert to fraction form
    262,105.86/393,159.09 = 79,738.16/x
  3. Step 3: Cross multiply
    262,105.86x = 393,159.09 × 79,738.16
  4. Step 4: Simplify right side
    262,105.86x = 31,349,780,458.08
  5. Step 5: Solve for x
    x = 31,349,780,458.08/262,105.86
  6. Step 6: Final answer
    x = 119,607.32

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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.