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Finding the Fourth Proportional to 19,308.70, 28,983.53 and 17,101.86

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Solution

The fourth proportional to 19,308.70, 28,983.53 and 17,101.86 is: 25,670.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,308.70 : 28,983.53 = 17,101.86 : x
  2. Step 2: Convert to fraction form
    19,308.70/28,983.53 = 17,101.86/x
  3. Step 3: Cross multiply
    19,308.70x = 28,983.53 × 17,101.86
  4. Step 4: Simplify right side
    19,308.70x = 495,672,272.37
  5. Step 5: Solve for x
    x = 495,672,272.37/19,308.70
  6. Step 6: Final answer
    x = 25,670.93

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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.