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Finding the Fourth Proportional to 90,166.91, 124,429.77 and 49,879.94

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Solution

The fourth proportional to 90,166.91, 124,429.77 and 49,879.94 is: 68,834.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,166.91 : 124,429.77 = 49,879.94 : x
  2. Step 2: Convert to fraction form
    90,166.91/124,429.77 = 49,879.94/x
  3. Step 3: Cross multiply
    90,166.91x = 124,429.77 × 49,879.94
  4. Step 4: Simplify right side
    90,166.91x = 6,206,548,839.66
  5. Step 5: Solve for x
    x = 6,206,548,839.66/90,166.91
  6. Step 6: Final answer
    x = 68,834.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.