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Finding the Fourth Proportional to 19,368.52, 26,724.53 and 12,664.00

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Solution

The fourth proportional to 19,368.52, 26,724.53 and 12,664.00 is: 17,473.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,368.52 : 26,724.53 = 12,664.00 : x
  2. Step 2: Convert to fraction form
    19,368.52/26,724.53 = 12,664.00/x
  3. Step 3: Cross multiply
    19,368.52x = 26,724.53 × 12,664.00
  4. Step 4: Simplify right side
    19,368.52x = 338,439,362.66
  5. Step 5: Solve for x
    x = 338,439,362.66/19,368.52
  6. Step 6: Final answer
    x = 17,473.68

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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.