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Finding the Fourth Proportional to 14,179.51, 19,567.53 and 7,891.88

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Solution

The fourth proportional to 14,179.51, 19,567.53 and 7,891.88 is: 10,890.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,179.51 : 19,567.53 = 7,891.88 : x
  2. Step 2: Convert to fraction form
    14,179.51/19,567.53 = 7,891.88/x
  3. Step 3: Cross multiply
    14,179.51x = 19,567.53 × 7,891.88
  4. Step 4: Simplify right side
    14,179.51x = 154,424,647.58
  5. Step 5: Solve for x
    x = 154,424,647.58/14,179.51
  6. Step 6: Final answer
    x = 10,890.69

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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.