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Finding the Fourth Proportional to 14,369.55, 19,829.84 and 8,081.79

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Solution

The fourth proportional to 14,369.55, 19,829.84 and 8,081.79 is: 11,152.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,369.55 : 19,829.84 = 8,081.79 : x
  2. Step 2: Convert to fraction form
    14,369.55/19,829.84 = 8,081.79/x
  3. Step 3: Cross multiply
    14,369.55x = 19,829.84 × 8,081.79
  4. Step 4: Simplify right side
    14,369.55x = 160,260,602.61
  5. Step 5: Solve for x
    x = 160,260,602.61/14,369.55
  6. Step 6: Final answer
    x = 11,152.79

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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.