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Finding the Fourth Proportional to 14,641.90, 20,205.86 and 7,927.61

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Solution

The fourth proportional to 14,641.90, 20,205.86 and 7,927.61 is: 10,940.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,641.90 : 20,205.86 = 7,927.61 : x
  2. Step 2: Convert to fraction form
    14,641.90/20,205.86 = 7,927.61/x
  3. Step 3: Cross multiply
    14,641.90x = 20,205.86 × 7,927.61
  4. Step 4: Simplify right side
    14,641.90x = 160,184,037.13
  5. Step 5: Solve for x
    x = 160,184,037.13/14,641.90
  6. Step 6: Final answer
    x = 10,940.11

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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.