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Finding the Fourth Proportional to 13,707.70, 19,216.70 and 13,707.70

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Solution

The fourth proportional to 13,707.70, 19,216.70 and 13,707.70 is: 19,216.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.70 : 19,216.70 = 13,707.70 : x
  2. Step 2: Convert to fraction form
    13,707.70/19,216.70 = 13,707.70/x
  3. Step 3: Cross multiply
    13,707.70x = 19,216.70 × 13,707.70
  4. Step 4: Simplify right side
    13,707.70x = 263,416,758.59
  5. Step 5: Solve for x
    x = 263,416,758.59/13,707.70
  6. Step 6: Final answer
    x = 19,216.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.