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Finding the Fourth Proportional to 14,485.78, 19,989.48 and 8,024.14

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Solution

The fourth proportional to 14,485.78, 19,989.48 and 8,024.14 is: 11,072.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,485.78 : 19,989.48 = 8,024.14 : x
  2. Step 2: Convert to fraction form
    14,485.78/19,989.48 = 8,024.14/x
  3. Step 3: Cross multiply
    14,485.78x = 19,989.48 × 8,024.14
  4. Step 4: Simplify right side
    14,485.78x = 160,398,386.05
  5. Step 5: Solve for x
    x = 160,398,386.05/14,485.78
  6. Step 6: Final answer
    x = 11,072.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.