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Finding the Fourth Proportional to 12,063.59, 18,115.93 and 7,854.01

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Solution

The fourth proportional to 12,063.59, 18,115.93 and 7,854.01 is: 11,794.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,063.59 : 18,115.93 = 7,854.01 : x
  2. Step 2: Convert to fraction form
    12,063.59/18,115.93 = 7,854.01/x
  3. Step 3: Cross multiply
    12,063.59x = 18,115.93 × 7,854.01
  4. Step 4: Simplify right side
    12,063.59x = 142,282,695.38
  5. Step 5: Solve for x
    x = 142,282,695.38/12,063.59
  6. Step 6: Final answer
    x = 11,794.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.