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Finding the Fourth Proportional to 38,892.03, 53,666.60 and 21,894.99

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Solution

The fourth proportional to 38,892.03, 53,666.60 and 21,894.99 is: 30,212.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,892.03 : 53,666.60 = 21,894.99 : x
  2. Step 2: Convert to fraction form
    38,892.03/53,666.60 = 21,894.99/x
  3. Step 3: Cross multiply
    38,892.03x = 53,666.60 × 21,894.99
  4. Step 4: Simplify right side
    38,892.03x = 1,175,029,560.86
  5. Step 5: Solve for x
    x = 1,175,029,560.86/38,892.03
  6. Step 6: Final answer
    x = 30,212.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.