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Finding the Fourth Proportional to 8,790.84, 12,135.76 and 5,973.05

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Solution

The fourth proportional to 8,790.84, 12,135.76 and 5,973.05 is: 8,245.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.84 : 12,135.76 = 5,973.05 : x
  2. Step 2: Convert to fraction form
    8,790.84/12,135.76 = 5,973.05/x
  3. Step 3: Cross multiply
    8,790.84x = 12,135.76 × 5,973.05
  4. Step 4: Simplify right side
    8,790.84x = 72,487,516.67
  5. Step 5: Solve for x
    x = 72,487,516.67/8,790.84
  6. Step 6: Final answer
    x = 8,245.80

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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.