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Finding the Fourth Proportional to 14,392.72, 19,862.40 and 7,932.04

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Solution

The fourth proportional to 14,392.72, 19,862.40 and 7,932.04 is: 10,946.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,392.72 : 19,862.40 = 7,932.04 : x
  2. Step 2: Convert to fraction form
    14,392.72/19,862.40 = 7,932.04/x
  3. Step 3: Cross multiply
    14,392.72x = 19,862.40 × 7,932.04
  4. Step 4: Simplify right side
    14,392.72x = 157,549,351.30
  5. Step 5: Solve for x
    x = 157,549,351.30/14,392.72
  6. Step 6: Final answer
    x = 10,946.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.