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Finding the Fourth Proportional to 19,358.70, 29,038.05 and 16,824.30

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Solution

The fourth proportional to 19,358.70, 29,038.05 and 16,824.30 is: 25,236.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,358.70 : 29,038.05 = 16,824.30 : x
  2. Step 2: Convert to fraction form
    19,358.70/29,038.05 = 16,824.30/x
  3. Step 3: Cross multiply
    19,358.70x = 29,038.05 × 16,824.30
  4. Step 4: Simplify right side
    19,358.70x = 488,544,864.62
  5. Step 5: Solve for x
    x = 488,544,864.62/19,358.70
  6. Step 6: Final answer
    x = 25,236.45

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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.