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Finding the Fourth Proportional to 19,479.39, 29,223.93 and 5,628.39

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Solution

The fourth proportional to 19,479.39, 29,223.93 and 5,628.39 is: 8,443.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,479.39 : 29,223.93 = 5,628.39 : x
  2. Step 2: Convert to fraction form
    19,479.39/29,223.93 = 5,628.39/x
  3. Step 3: Cross multiply
    19,479.39x = 29,223.93 × 5,628.39
  4. Step 4: Simplify right side
    19,479.39x = 164,483,675.37
  5. Step 5: Solve for x
    x = 164,483,675.37/19,479.39
  6. Step 6: Final answer
    x = 8,443.98

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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.