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Finding the Fourth Proportional to 219,783.54, 329,657.07 and 70,017.78

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Solution

The fourth proportional to 219,783.54, 329,657.07 and 70,017.78 is: 105,020.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,783.54 : 329,657.07 = 70,017.78 : x
  2. Step 2: Convert to fraction form
    219,783.54/329,657.07 = 70,017.78/x
  3. Step 3: Cross multiply
    219,783.54x = 329,657.07 × 70,017.78
  4. Step 4: Simplify right side
    219,783.54x = 23,081,856,202.70
  5. Step 5: Solve for x
    x = 23,081,856,202.70/219,783.54
  6. Step 6: Final answer
    x = 105,020.86

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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.