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Finding the Fourth Proportional to 24,921, 34,390.98 and 14,985

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Solution

The fourth proportional to 24,921, 34,390.98 and 14,985 is: 20,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,921 : 34,390.98 = 14,985 : x
  2. Step 2: Convert to fraction form
    24,921/34,390.98 = 14,985/x
  3. Step 3: Cross multiply
    24,921x = 34,390.98 × 14,985
  4. Step 4: Simplify right side
    24,921x = 515,348,835.30
  5. Step 5: Solve for x
    x = 515,348,835.30/24,921
  6. Step 6: Final answer
    x = 20,679.30

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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.