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Finding the Fourth Proportional to 14,775.74, 20,389.80 and 8,060.96

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Solution

The fourth proportional to 14,775.74, 20,389.80 and 8,060.96 is: 11,123.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.74 : 20,389.80 = 8,060.96 : x
  2. Step 2: Convert to fraction form
    14,775.74/20,389.80 = 8,060.96/x
  3. Step 3: Cross multiply
    14,775.74x = 20,389.80 × 8,060.96
  4. Step 4: Simplify right side
    14,775.74x = 164,361,413.18
  5. Step 5: Solve for x
    x = 164,361,413.18/14,775.74
  6. Step 6: Final answer
    x = 11,123.74

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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.