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Finding the Fourth Proportional to 219,641.35, 329,556.29 and 69,893.81

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Solution

The fourth proportional to 219,641.35, 329,556.29 and 69,893.81 is: 104,870.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,641.35 : 329,556.29 = 69,893.81 : x
  2. Step 2: Convert to fraction form
    219,641.35/329,556.29 = 69,893.81/x
  3. Step 3: Cross multiply
    219,641.35x = 329,556.29 × 69,893.81
  4. Step 4: Simplify right side
    219,641.35x = 23,033,945,191.99
  5. Step 5: Solve for x
    x = 23,033,945,191.99/219,641.35
  6. Step 6: Final answer
    x = 104,870.72

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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.