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Finding the Fourth Proportional to 12,235.61, 16,892.13 and 8,056.01

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Solution

The fourth proportional to 12,235.61, 16,892.13 and 8,056.01 is: 11,121.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,235.61 : 16,892.13 = 8,056.01 : x
  2. Step 2: Convert to fraction form
    12,235.61/16,892.13 = 8,056.01/x
  3. Step 3: Cross multiply
    12,235.61x = 16,892.13 × 8,056.01
  4. Step 4: Simplify right side
    12,235.61x = 136,083,083.74
  5. Step 5: Solve for x
    x = 136,083,083.74/12,235.61
  6. Step 6: Final answer
    x = 11,121.89

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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.