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Finding the Fourth Proportional to 13,030.02, 17,981.28 and 7,061.61

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Solution

The fourth proportional to 13,030.02, 17,981.28 and 7,061.61 is: 9,744.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,030.02 : 17,981.28 = 7,061.61 : x
  2. Step 2: Convert to fraction form
    13,030.02/17,981.28 = 7,061.61/x
  3. Step 3: Cross multiply
    13,030.02x = 17,981.28 × 7,061.61
  4. Step 4: Simplify right side
    13,030.02x = 126,976,786.66
  5. Step 5: Solve for x
    x = 126,976,786.66/13,030.02
  6. Step 6: Final answer
    x = 9,744.94

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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.