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Finding the Fourth Proportional to 21,292.44, 29,384.91 and 11,860.98

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Solution

The fourth proportional to 21,292.44, 29,384.91 and 11,860.98 is: 16,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.44 : 29,384.91 = 11,860.98 : x
  2. Step 2: Convert to fraction form
    21,292.44/29,384.91 = 11,860.98/x
  3. Step 3: Cross multiply
    21,292.44x = 29,384.91 × 11,860.98
  4. Step 4: Simplify right side
    21,292.44x = 348,533,829.81
  5. Step 5: Solve for x
    x = 348,533,829.81/21,292.44
  6. Step 6: Final answer
    x = 16,368.90

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.