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Finding the Fourth Proportional to 34,435.50, 51,661.92 and 9,811.50

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Solution

The fourth proportional to 34,435.50, 51,661.92 and 9,811.50 is: 14,719.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,435.50 : 51,661.92 = 9,811.50 : x
  2. Step 2: Convert to fraction form
    34,435.50/51,661.92 = 9,811.50/x
  3. Step 3: Cross multiply
    34,435.50x = 51,661.92 × 9,811.50
  4. Step 4: Simplify right side
    34,435.50x = 506,880,928.08
  5. Step 5: Solve for x
    x = 506,880,928.08/34,435.50
  6. Step 6: Final answer
    x = 14,719.72

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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.