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Finding the Fourth Proportional to 14,638.95, 21,955.94 and 5,277.11

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Solution

The fourth proportional to 14,638.95, 21,955.94 and 5,277.11 is: 7,914.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,638.95 : 21,955.94 = 5,277.11 : x
  2. Step 2: Convert to fraction form
    14,638.95/21,955.94 = 5,277.11/x
  3. Step 3: Cross multiply
    14,638.95x = 21,955.94 × 5,277.11
  4. Step 4: Simplify right side
    14,638.95x = 115,863,774.37
  5. Step 5: Solve for x
    x = 115,863,774.37/14,638.95
  6. Step 6: Final answer
    x = 7,914.76

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1.5x scale

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.