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Finding the Fourth Proportional to 53,570.90, 80,337.71 and 21,971.99

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Solution

The fourth proportional to 53,570.90, 80,337.71 and 21,971.99 is: 32,950.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,570.90 : 80,337.71 = 21,971.99 : x
  2. Step 2: Convert to fraction form
    53,570.90/80,337.71 = 21,971.99/x
  3. Step 3: Cross multiply
    53,570.90x = 80,337.71 × 21,971.99
  4. Step 4: Simplify right side
    53,570.90x = 1,765,178,849.19
  5. Step 5: Solve for x
    x = 1,765,178,849.19/53,570.90
  6. Step 6: Final answer
    x = 32,950.33

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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.