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Finding the Fourth Proportional to 14,470.68, 19,972.40 and 8,504.28

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Solution

The fourth proportional to 14,470.68, 19,972.40 and 8,504.28 is: 11,737.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,470.68 : 19,972.40 = 8,504.28 : x
  2. Step 2: Convert to fraction form
    14,470.68/19,972.40 = 8,504.28/x
  3. Step 3: Cross multiply
    14,470.68x = 19,972.40 × 8,504.28
  4. Step 4: Simplify right side
    14,470.68x = 169,850,881.87
  5. Step 5: Solve for x
    x = 169,850,881.87/14,470.68
  6. Step 6: Final answer
    x = 11,737.59

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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.