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Finding the Fourth Proportional to 43,358.72, 65,038.10 and 12,193.97

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Solution

The fourth proportional to 43,358.72, 65,038.10 and 12,193.97 is: 18,290.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,358.72 : 65,038.10 = 12,193.97 : x
  2. Step 2: Convert to fraction form
    43,358.72/65,038.10 = 12,193.97/x
  3. Step 3: Cross multiply
    43,358.72x = 65,038.10 × 12,193.97
  4. Step 4: Simplify right side
    43,358.72x = 793,072,640.26
  5. Step 5: Solve for x
    x = 793,072,640.26/43,358.72
  6. Step 6: Final answer
    x = 18,290.96

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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.