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Finding the Fourth Proportional to 14,615.73, 20,075.49 and 14,335.54

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Solution

The fourth proportional to 14,615.73, 20,075.49 and 14,335.54 is: 19,690.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,615.73 : 20,075.49 = 14,335.54 : x
  2. Step 2: Convert to fraction form
    14,615.73/20,075.49 = 14,335.54/x
  3. Step 3: Cross multiply
    14,615.73x = 20,075.49 × 14,335.54
  4. Step 4: Simplify right side
    14,615.73x = 287,792,989.91
  5. Step 5: Solve for x
    x = 287,792,989.91/14,615.73
  6. Step 6: Final answer
    x = 19,690.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.