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Finding the Fourth Proportional to 174,038.56, 260,589.36 and 90,756.64

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Solution

The fourth proportional to 174,038.56, 260,589.36 and 90,756.64 is: 135,890.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,038.56 : 260,589.36 = 90,756.64 : x
  2. Step 2: Convert to fraction form
    174,038.56/260,589.36 = 90,756.64/x
  3. Step 3: Cross multiply
    174,038.56x = 260,589.36 × 90,756.64
  4. Step 4: Simplify right side
    174,038.56x = 23,650,214,733.35
  5. Step 5: Solve for x
    x = 23,650,214,733.35/174,038.56
  6. Step 6: Final answer
    x = 135,890.66

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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.