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Finding the Fourth Proportional to 28,886.60, 43,349.10 and 16,406.60

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Solution

The fourth proportional to 28,886.60, 43,349.10 and 16,406.60 is: 24,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,886.60 : 43,349.10 = 16,406.60 : x
  2. Step 2: Convert to fraction form
    28,886.60/43,349.10 = 16,406.60/x
  3. Step 3: Cross multiply
    28,886.60x = 43,349.10 × 16,406.60
  4. Step 4: Simplify right side
    28,886.60x = 711,211,344.06
  5. Step 5: Solve for x
    x = 711,211,344.06/28,886.60
  6. Step 6: Final answer
    x = 24,620.80

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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.