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Finding the Fourth Proportional to 15,730.80, 23,653.80 and 13,196.40

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Solution

The fourth proportional to 15,730.80, 23,653.80 and 13,196.40 is: 19,842.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,730.80 : 23,653.80 = 13,196.40 : x
  2. Step 2: Convert to fraction form
    15,730.80/23,653.80 = 13,196.40/x
  3. Step 3: Cross multiply
    15,730.80x = 23,653.80 × 13,196.40
  4. Step 4: Simplify right side
    15,730.80x = 312,145,006.32
  5. Step 5: Solve for x
    x = 312,145,006.32/15,730.80
  6. Step 6: Final answer
    x = 19,842.92

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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.