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Finding the Fourth Proportional to 19,866.57, 29,799.90 and 7,389.33

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Solution

The fourth proportional to 19,866.57, 29,799.90 and 7,389.33 is: 11,084.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,866.57 : 29,799.90 = 7,389.33 : x
  2. Step 2: Convert to fraction form
    19,866.57/29,799.90 = 7,389.33/x
  3. Step 3: Cross multiply
    19,866.57x = 29,799.90 × 7,389.33
  4. Step 4: Simplify right side
    19,866.57x = 220,201,295.07
  5. Step 5: Solve for x
    x = 220,201,295.07/19,866.57
  6. Step 6: Final answer
    x = 11,084.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.