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Finding the Fourth Proportional to 14,691.64, 20,264.44 and 9,384.08

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Solution

The fourth proportional to 14,691.64, 20,264.44 and 9,384.08 is: 12,943.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,691.64 : 20,264.44 = 9,384.08 : x
  2. Step 2: Convert to fraction form
    14,691.64/20,264.44 = 9,384.08/x
  3. Step 3: Cross multiply
    14,691.64x = 20,264.44 × 9,384.08
  4. Step 4: Simplify right side
    14,691.64x = 190,163,126.12
  5. Step 5: Solve for x
    x = 190,163,126.12/14,691.64
  6. Step 6: Final answer
    x = 12,943.63

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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.