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Finding the Fourth Proportional to 28,313.48, 39,061.10 and 16,983.48

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Solution

The fourth proportional to 28,313.48, 39,061.10 and 16,983.48 is: 23,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,313.48 : 39,061.10 = 16,983.48 : x
  2. Step 2: Convert to fraction form
    28,313.48/39,061.10 = 16,983.48/x
  3. Step 3: Cross multiply
    28,313.48x = 39,061.10 × 16,983.48
  4. Step 4: Simplify right side
    28,313.48x = 663,393,410.63
  5. Step 5: Solve for x
    x = 663,393,410.63/28,313.48
  6. Step 6: Final answer
    x = 23,430.30

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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.