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Finding the Fourth Proportional to 12,043.90, 18,056.13 and 11,071.90

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Solution

The fourth proportional to 12,043.90, 18,056.13 and 11,071.90 is: 16,598.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,043.90 : 18,056.13 = 11,071.90 : x
  2. Step 2: Convert to fraction form
    12,043.90/18,056.13 = 11,071.90/x
  3. Step 3: Cross multiply
    12,043.90x = 18,056.13 × 11,071.90
  4. Step 4: Simplify right side
    12,043.90x = 199,915,665.75
  5. Step 5: Solve for x
    x = 199,915,665.75/12,043.90
  6. Step 6: Final answer
    x = 16,598.91

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1.5x scale

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.