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Finding the Fourth Proportional to 15,168.50, 20,934.69 and 14,504.30

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Solution

The fourth proportional to 15,168.50, 20,934.69 and 14,504.30 is: 20,018.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168.50 : 20,934.69 = 14,504.30 : x
  2. Step 2: Convert to fraction form
    15,168.50/20,934.69 = 14,504.30/x
  3. Step 3: Cross multiply
    15,168.50x = 20,934.69 × 14,504.30
  4. Step 4: Simplify right side
    15,168.50x = 303,643,024.17
  5. Step 5: Solve for x
    x = 303,643,024.17/15,168.50
  6. Step 6: Final answer
    x = 20,018.00

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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.