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Finding the Fourth Proportional to 19,326.50, 28,989.76 and 4,734.50

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Solution

The fourth proportional to 19,326.50, 28,989.76 and 4,734.50 is: 7,101.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,326.50 : 28,989.76 = 4,734.50 : x
  2. Step 2: Convert to fraction form
    19,326.50/28,989.76 = 4,734.50/x
  3. Step 3: Cross multiply
    19,326.50x = 28,989.76 × 4,734.50
  4. Step 4: Simplify right side
    19,326.50x = 137,252,018.72
  5. Step 5: Solve for x
    x = 137,252,018.72/19,326.50
  6. Step 6: Final answer
    x = 7,101.75

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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.