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Finding the Fourth Proportional to 59,570.78, 89,220.08 and 28,427.90

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Solution

The fourth proportional to 59,570.78, 89,220.08 and 28,427.90 is: 42,576.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,570.78 : 89,220.08 = 28,427.90 : x
  2. Step 2: Convert to fraction form
    59,570.78/89,220.08 = 28,427.90/x
  3. Step 3: Cross multiply
    59,570.78x = 89,220.08 × 28,427.90
  4. Step 4: Simplify right side
    59,570.78x = 2,536,339,512.23
  5. Step 5: Solve for x
    x = 2,536,339,512.23/59,570.78
  6. Step 6: Final answer
    x = 42,576.91

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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.