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Finding the Fourth Proportional to 44,768.40, 67,075.80 and 21,344.40

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Solution

The fourth proportional to 44,768.40, 67,075.80 and 21,344.40 is: 31,979.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,768.40 : 67,075.80 = 21,344.40 : x
  2. Step 2: Convert to fraction form
    44,768.40/67,075.80 = 21,344.40/x
  3. Step 3: Cross multiply
    44,768.40x = 67,075.80 × 21,344.40
  4. Step 4: Simplify right side
    44,768.40x = 1,431,692,705.52
  5. Step 5: Solve for x
    x = 1,431,692,705.52/44,768.40
  6. Step 6: Final answer
    x = 31,979.98

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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.