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Finding the Fourth Proportional to 59,855.20, 89,977.20 and 42,445.60

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Solution

The fourth proportional to 59,855.20, 89,977.20 and 42,445.60 is: 63,806.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,855.20 : 89,977.20 = 42,445.60 : x
  2. Step 2: Convert to fraction form
    59,855.20/89,977.20 = 42,445.60/x
  3. Step 3: Cross multiply
    59,855.20x = 89,977.20 × 42,445.60
  4. Step 4: Simplify right side
    59,855.20x = 3,819,136,240.32
  5. Step 5: Solve for x
    x = 3,819,136,240.32/59,855.20
  6. Step 6: Final answer
    x = 63,806.26

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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.