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Finding the Fourth Proportional to 173,406.10, 260,109.15 and 89,425.30

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Solution

The fourth proportional to 173,406.10, 260,109.15 and 89,425.30 is: 134,137.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,406.10 : 260,109.15 = 89,425.30 : x
  2. Step 2: Convert to fraction form
    173,406.10/260,109.15 = 89,425.30/x
  3. Step 3: Cross multiply
    173,406.10x = 260,109.15 × 89,425.30
  4. Step 4: Simplify right side
    173,406.10x = 23,260,338,771.50
  5. Step 5: Solve for x
    x = 23,260,338,771.50/173,406.10
  6. Step 6: Final answer
    x = 134,137.95

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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.