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Finding the Fourth Proportional to 81,295.91, 121,931.55 and 22,136.24

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Solution

The fourth proportional to 81,295.91, 121,931.55 and 22,136.24 is: 33,201.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,295.91 : 121,931.55 = 22,136.24 : x
  2. Step 2: Convert to fraction form
    81,295.91/121,931.55 = 22,136.24/x
  3. Step 3: Cross multiply
    81,295.91x = 121,931.55 × 22,136.24
  4. Step 4: Simplify right side
    81,295.91x = 2,699,106,054.37
  5. Step 5: Solve for x
    x = 2,699,106,054.37/81,295.91
  6. Step 6: Final answer
    x = 33,201.01

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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.