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Finding the Fourth Proportional to 43,221.50, 64,832.25 and 14,037.50

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Solution

The fourth proportional to 43,221.50, 64,832.25 and 14,037.50 is: 21,056.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,221.50 : 64,832.25 = 14,037.50 : x
  2. Step 2: Convert to fraction form
    43,221.50/64,832.25 = 14,037.50/x
  3. Step 3: Cross multiply
    43,221.50x = 64,832.25 × 14,037.50
  4. Step 4: Simplify right side
    43,221.50x = 910,082,709.38
  5. Step 5: Solve for x
    x = 910,082,709.38/43,221.50
  6. Step 6: Final answer
    x = 21,056.25

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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.