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Finding the Fourth Proportional to 14,435.61, 21,661.11 and 5,670.60

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Solution

The fourth proportional to 14,435.61, 21,661.11 and 5,670.60 is: 8,508.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,435.61 : 21,661.11 = 5,670.60 : x
  2. Step 2: Convert to fraction form
    14,435.61/21,661.11 = 5,670.60/x
  3. Step 3: Cross multiply
    14,435.61x = 21,661.11 × 5,670.60
  4. Step 4: Simplify right side
    14,435.61x = 122,831,490.37
  5. Step 5: Solve for x
    x = 122,831,490.37/14,435.61
  6. Step 6: Final answer
    x = 8,508.92

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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.