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Finding the Fourth Proportional to 14,336.85, 19,784.58 and 7,963.47

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Solution

The fourth proportional to 14,336.85, 19,784.58 and 7,963.47 is: 10,989.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,336.85 : 19,784.58 = 7,963.47 : x
  2. Step 2: Convert to fraction form
    14,336.85/19,784.58 = 7,963.47/x
  3. Step 3: Cross multiply
    14,336.85x = 19,784.58 × 7,963.47
  4. Step 4: Simplify right side
    14,336.85x = 157,553,909.29
  5. Step 5: Solve for x
    x = 157,553,909.29/14,336.85
  6. Step 6: Final answer
    x = 10,989.44

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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.