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Finding the Fourth Proportional to 61,058.99, 91,601.64 and 18,938.23

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Solution

The fourth proportional to 61,058.99, 91,601.64 and 18,938.23 is: 28,411.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,058.99 : 91,601.64 = 18,938.23 : x
  2. Step 2: Convert to fraction form
    61,058.99/91,601.64 = 18,938.23/x
  3. Step 3: Cross multiply
    61,058.99x = 91,601.64 × 18,938.23
  4. Step 4: Simplify right side
    61,058.99x = 1,734,773,041.20
  5. Step 5: Solve for x
    x = 1,734,773,041.20/61,058.99
  6. Step 6: Final answer
    x = 28,411.43

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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.