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Finding the Fourth Proportional to 14,191.63, 19,584.89 and 7,818.68

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Solution

The fourth proportional to 14,191.63, 19,584.89 and 7,818.68 is: 10,790.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,191.63 : 19,584.89 = 7,818.68 : x
  2. Step 2: Convert to fraction form
    14,191.63/19,584.89 = 7,818.68/x
  3. Step 3: Cross multiply
    14,191.63x = 19,584.89 × 7,818.68
  4. Step 4: Simplify right side
    14,191.63x = 153,127,987.75
  5. Step 5: Solve for x
    x = 153,127,987.75/14,191.63
  6. Step 6: Final answer
    x = 10,790.02

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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.