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Finding the Fourth Proportional to 14,243.48, 19,655.96 and 7,955.84

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Solution

The fourth proportional to 14,243.48, 19,655.96 and 7,955.84 is: 10,979.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,243.48 : 19,655.96 = 7,955.84 : x
  2. Step 2: Convert to fraction form
    14,243.48/19,655.96 = 7,955.84/x
  3. Step 3: Cross multiply
    14,243.48x = 19,655.96 × 7,955.84
  4. Step 4: Simplify right side
    14,243.48x = 156,379,672.81
  5. Step 5: Solve for x
    x = 156,379,672.81/14,243.48
  6. Step 6: Final answer
    x = 10,979.04

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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.