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Finding the Fourth Proportional to 8,392.43, 11,582.12 and 5,554.91

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Solution

The fourth proportional to 8,392.43, 11,582.12 and 5,554.91 is: 7,666.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,392.43 : 11,582.12 = 5,554.91 : x
  2. Step 2: Convert to fraction form
    8,392.43/11,582.12 = 5,554.91/x
  3. Step 3: Cross multiply
    8,392.43x = 11,582.12 × 5,554.91
  4. Step 4: Simplify right side
    8,392.43x = 64,337,677.05
  5. Step 5: Solve for x
    x = 64,337,677.05/8,392.43
  6. Step 6: Final answer
    x = 7,666.15

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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.