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Finding the Fourth Proportional to 19,416.57, 29,081.10 and 13,599.15

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Solution

The fourth proportional to 19,416.57, 29,081.10 and 13,599.15 is: 20,368.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,416.57 : 29,081.10 = 13,599.15 : x
  2. Step 2: Convert to fraction form
    19,416.57/29,081.10 = 13,599.15/x
  3. Step 3: Cross multiply
    19,416.57x = 29,081.10 × 13,599.15
  4. Step 4: Simplify right side
    19,416.57x = 395,478,173.07
  5. Step 5: Solve for x
    x = 395,478,173.07/19,416.57
  6. Step 6: Final answer
    x = 20,368.08

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