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Finding the Fourth Proportional to 14,615.71, 20,169.54 and 7,901.26

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Solution

The fourth proportional to 14,615.71, 20,169.54 and 7,901.26 is: 10,903.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,615.71 : 20,169.54 = 7,901.26 : x
  2. Step 2: Convert to fraction form
    14,615.71/20,169.54 = 7,901.26/x
  3. Step 3: Cross multiply
    14,615.71x = 20,169.54 × 7,901.26
  4. Step 4: Simplify right side
    14,615.71x = 159,364,779.62
  5. Step 5: Solve for x
    x = 159,364,779.62/14,615.71
  6. Step 6: Final answer
    x = 10,903.66

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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.