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Finding the Fourth Proportional to 53,101.87, 79,652.79 and 21,937.93

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Solution

The fourth proportional to 53,101.87, 79,652.79 and 21,937.93 is: 32,906.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,101.87 : 79,652.79 = 21,937.93 : x
  2. Step 2: Convert to fraction form
    53,101.87/79,652.79 = 21,937.93/x
  3. Step 3: Cross multiply
    53,101.87x = 79,652.79 × 21,937.93
  4. Step 4: Simplify right side
    53,101.87x = 1,747,417,331.32
  5. Step 5: Solve for x
    x = 1,747,417,331.32/53,101.87
  6. Step 6: Final answer
    x = 32,906.89

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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.