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Finding the Fourth Proportional to 8,605.65, 11,876.36 and 4,829.05

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Solution

The fourth proportional to 8,605.65, 11,876.36 and 4,829.05 is: 6,664.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.65 : 11,876.36 = 4,829.05 : x
  2. Step 2: Convert to fraction form
    8,605.65/11,876.36 = 4,829.05/x
  3. Step 3: Cross multiply
    8,605.65x = 11,876.36 × 4,829.05
  4. Step 4: Simplify right side
    8,605.65x = 57,351,536.26
  5. Step 5: Solve for x
    x = 57,351,536.26/8,605.65
  6. Step 6: Final answer
    x = 6,664.40

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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.