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Finding the Fourth Proportional to 14,925.81, 20,597.62 and 8,638.19

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Solution

The fourth proportional to 14,925.81, 20,597.62 and 8,638.19 is: 11,920.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,925.81 : 20,597.62 = 8,638.19 : x
  2. Step 2: Convert to fraction form
    14,925.81/20,597.62 = 8,638.19/x
  3. Step 3: Cross multiply
    14,925.81x = 20,597.62 × 8,638.19
  4. Step 4: Simplify right side
    14,925.81x = 177,926,155.11
  5. Step 5: Solve for x
    x = 177,926,155.11/14,925.81
  6. Step 6: Final answer
    x = 11,920.70

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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.