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Finding the Fourth Proportional to 13,368.97, 18,448.99 and 7,400.76

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Solution

The fourth proportional to 13,368.97, 18,448.99 and 7,400.76 is: 10,212.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.97 : 18,448.99 = 7,400.76 : x
  2. Step 2: Convert to fraction form
    13,368.97/18,448.99 = 7,400.76/x
  3. Step 3: Cross multiply
    13,368.97x = 18,448.99 × 7,400.76
  4. Step 4: Simplify right side
    13,368.97x = 136,536,547.23
  5. Step 5: Solve for x
    x = 136,536,547.23/13,368.97
  6. Step 6: Final answer
    x = 10,212.94

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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.