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Finding the Fourth Proportional to 14,352.96, 19,806.88 and 8,065.28

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Solution

The fourth proportional to 14,352.96, 19,806.88 and 8,065.28 is: 11,129.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,352.96 : 19,806.88 = 8,065.28 : x
  2. Step 2: Convert to fraction form
    14,352.96/19,806.88 = 8,065.28/x
  3. Step 3: Cross multiply
    14,352.96x = 19,806.88 × 8,065.28
  4. Step 4: Simplify right side
    14,352.96x = 159,748,033.13
  5. Step 5: Solve for x
    x = 159,748,033.13/14,352.96
  6. Step 6: Final answer
    x = 11,129.97

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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.