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Finding the Fourth Proportional to 58,276.80, 87,415.20 and 37,281.60

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Solution

The fourth proportional to 58,276.80, 87,415.20 and 37,281.60 is: 55,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,276.80 : 87,415.20 = 37,281.60 : x
  2. Step 2: Convert to fraction form
    58,276.80/87,415.20 = 37,281.60/x
  3. Step 3: Cross multiply
    58,276.80x = 87,415.20 × 37,281.60
  4. Step 4: Simplify right side
    58,276.80x = 3,258,978,520.32
  5. Step 5: Solve for x
    x = 3,258,978,520.32/58,276.80
  6. Step 6: Final answer
    x = 55,922.40

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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.