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Finding the Fourth Proportional to 22,986.60, 34,484.70 and 7,405.80

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Solution

The fourth proportional to 22,986.60, 34,484.70 and 7,405.80 is: 11,110.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,986.60 : 34,484.70 = 7,405.80 : x
  2. Step 2: Convert to fraction form
    22,986.60/34,484.70 = 7,405.80/x
  3. Step 3: Cross multiply
    22,986.60x = 34,484.70 × 7,405.80
  4. Step 4: Simplify right side
    22,986.60x = 255,386,791.26
  5. Step 5: Solve for x
    x = 255,386,791.26/22,986.60
  6. Step 6: Final answer
    x = 11,110.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.