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Finding the Fourth Proportional to 14,313.11, 19,750.48 and 7,939.52

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Solution

The fourth proportional to 14,313.11, 19,750.48 and 7,939.52 is: 10,955.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,313.11 : 19,750.48 = 7,939.52 : x
  2. Step 2: Convert to fraction form
    14,313.11/19,750.48 = 7,939.52/x
  3. Step 3: Cross multiply
    14,313.11x = 19,750.48 × 7,939.52
  4. Step 4: Simplify right side
    14,313.11x = 156,809,331.09
  5. Step 5: Solve for x
    x = 156,809,331.09/14,313.11
  6. Step 6: Final answer
    x = 10,955.65

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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.