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Finding the Fourth Proportional to 32,458.58, 48,715.20 and 12,751.28

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Solution

The fourth proportional to 32,458.58, 48,715.20 and 12,751.28 is: 19,137.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,458.58 : 48,715.20 = 12,751.28 : x
  2. Step 2: Convert to fraction form
    32,458.58/48,715.20 = 12,751.28/x
  3. Step 3: Cross multiply
    32,458.58x = 48,715.20 × 12,751.28
  4. Step 4: Simplify right side
    32,458.58x = 621,180,911.88
  5. Step 5: Solve for x
    x = 621,180,911.88/32,458.58
  6. Step 6: Final answer
    x = 19,137.65

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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.