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Finding the Fourth Proportional to 173,722.10, 260,583.15 and 90,605.30

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Solution

The fourth proportional to 173,722.10, 260,583.15 and 90,605.30 is: 135,907.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,722.10 : 260,583.15 = 90,605.30 : x
  2. Step 2: Convert to fraction form
    173,722.10/260,583.15 = 90,605.30/x
  3. Step 3: Cross multiply
    173,722.10x = 260,583.15 × 90,605.30
  4. Step 4: Simplify right side
    173,722.10x = 23,610,214,480.70
  5. Step 5: Solve for x
    x = 23,610,214,480.70/173,722.10
  6. Step 6: Final answer
    x = 135,907.95

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1.5x scale

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.