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Finding the Fourth Proportional to 19,309.53, 26,647.80 and 10,812.00

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Solution

The fourth proportional to 19,309.53, 26,647.80 and 10,812.00 is: 14,920.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,309.53 : 26,647.80 = 10,812.00 : x
  2. Step 2: Convert to fraction form
    19,309.53/26,647.80 = 10,812.00/x
  3. Step 3: Cross multiply
    19,309.53x = 26,647.80 × 10,812.00
  4. Step 4: Simplify right side
    19,309.53x = 288,116,072.98
  5. Step 5: Solve for x
    x = 288,116,072.98/19,309.53
  6. Step 6: Final answer
    x = 14,920.93

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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.