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Finding the Fourth Proportional to 8,605.05, 11,875.46 and 4,828.02

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Solution

The fourth proportional to 8,605.05, 11,875.46 and 4,828.02 is: 6,662.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.05 : 11,875.46 = 4,828.02 : x
  2. Step 2: Convert to fraction form
    8,605.05/11,875.46 = 4,828.02/x
  3. Step 3: Cross multiply
    8,605.05x = 11,875.46 × 4,828.02
  4. Step 4: Simplify right side
    8,605.05x = 57,334,934.25
  5. Step 5: Solve for x
    x = 57,334,934.25/8,605.05
  6. Step 6: Final answer
    x = 6,662.94

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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.