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Finding the Fourth Proportional to 32,708.66, 49,071.20 and 12,980.70

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Solution

The fourth proportional to 32,708.66, 49,071.20 and 12,980.70 is: 19,474.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,708.66 : 49,071.20 = 12,980.70 : x
  2. Step 2: Convert to fraction form
    32,708.66/49,071.20 = 12,980.70/x
  3. Step 3: Cross multiply
    32,708.66x = 49,071.20 × 12,980.70
  4. Step 4: Simplify right side
    32,708.66x = 636,978,460.94
  5. Step 5: Solve for x
    x = 636,978,460.94/32,708.66
  6. Step 6: Final answer
    x = 19,474.31

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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.