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Finding the Fourth Proportional to 19,369.60, 29,032.80 and 11,053.60

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Solution

The fourth proportional to 19,369.60, 29,032.80 and 11,053.60 is: 16,568.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,369.60 : 29,032.80 = 11,053.60 : x
  2. Step 2: Convert to fraction form
    19,369.60/29,032.80 = 11,053.60/x
  3. Step 3: Cross multiply
    19,369.60x = 29,032.80 × 11,053.60
  4. Step 4: Simplify right side
    19,369.60x = 320,916,958.08
  5. Step 5: Solve for x
    x = 320,916,958.08/19,369.60
  6. Step 6: Final answer
    x = 16,568.07

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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.