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Finding the Fourth Proportional to 14,527.52, 21,791.28 and 4,139

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Solution

The fourth proportional to 14,527.52, 21,791.28 and 4,139 is: 6,208.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,527.52 : 21,791.28 = 4,139 : x
  2. Step 2: Convert to fraction form
    14,527.52/21,791.28 = 4,139/x
  3. Step 3: Cross multiply
    14,527.52x = 21,791.28 × 4,139
  4. Step 4: Simplify right side
    14,527.52x = 90,194,107.92
  5. Step 5: Solve for x
    x = 90,194,107.92/14,527.52
  6. Step 6: Final answer
    x = 6,208.50

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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.