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Finding the Fourth Proportional to 45,339.60, 68,009.30 and 12,059.67

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Solution

The fourth proportional to 45,339.60, 68,009.30 and 12,059.67 is: 18,089.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,339.60 : 68,009.30 = 12,059.67 : x
  2. Step 2: Convert to fraction form
    45,339.60/68,009.30 = 12,059.67/x
  3. Step 3: Cross multiply
    45,339.60x = 68,009.30 × 12,059.67
  4. Step 4: Simplify right side
    45,339.60x = 820,169,714.93
  5. Step 5: Solve for x
    x = 820,169,714.93/45,339.60
  6. Step 6: Final answer
    x = 18,089.48

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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.