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Finding the Fourth Proportional to 53,906.40, 80,853.90 and 14,467.50

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Solution

The fourth proportional to 53,906.40, 80,853.90 and 14,467.50 is: 21,699.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,906.40 : 80,853.90 = 14,467.50 : x
  2. Step 2: Convert to fraction form
    53,906.40/80,853.90 = 14,467.50/x
  3. Step 3: Cross multiply
    53,906.40x = 80,853.90 × 14,467.50
  4. Step 4: Simplify right side
    53,906.40x = 1,169,753,798.25
  5. Step 5: Solve for x
    x = 1,169,753,798.25/53,906.40
  6. Step 6: Final answer
    x = 21,699.72

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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.