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Finding the Fourth Proportional to 14,700.18, 20,279.54 and 8,728.46

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Solution

The fourth proportional to 14,700.18, 20,279.54 and 8,728.46 is: 12,041.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,700.18 : 20,279.54 = 8,728.46 : x
  2. Step 2: Convert to fraction form
    14,700.18/20,279.54 = 8,728.46/x
  3. Step 3: Cross multiply
    14,700.18x = 20,279.54 × 8,728.46
  4. Step 4: Simplify right side
    14,700.18x = 177,009,008.67
  5. Step 5: Solve for x
    x = 177,009,008.67/14,700.18
  6. Step 6: Final answer
    x = 12,041.28

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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.