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Finding the Fourth Proportional to 14,970.71, 20,659.74 and 8,256.62

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Solution

The fourth proportional to 14,970.71, 20,659.74 and 8,256.62 is: 11,394.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,970.71 : 20,659.74 = 8,256.62 : x
  2. Step 2: Convert to fraction form
    14,970.71/20,659.74 = 8,256.62/x
  3. Step 3: Cross multiply
    14,970.71x = 20,659.74 × 8,256.62
  4. Step 4: Simplify right side
    14,970.71x = 170,579,622.48
  5. Step 5: Solve for x
    x = 170,579,622.48/14,970.71
  6. Step 6: Final answer
    x = 11,394.22

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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.