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Finding the Fourth Proportional to 14,890.74, 20,549.44 and 8,176.98

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Solution

The fourth proportional to 14,890.74, 20,549.44 and 8,176.98 is: 11,284.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,890.74 : 20,549.44 = 8,176.98 : x
  2. Step 2: Convert to fraction form
    14,890.74/20,549.44 = 8,176.98/x
  3. Step 3: Cross multiply
    14,890.74x = 20,549.44 × 8,176.98
  4. Step 4: Simplify right side
    14,890.74x = 168,032,359.89
  5. Step 5: Solve for x
    x = 168,032,359.89/14,890.74
  6. Step 6: Final answer
    x = 11,284.35

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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.