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Finding the Fourth Proportional to 220,203.45, 308,699.55 and 220,203.45

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Solution

The fourth proportional to 220,203.45, 308,699.55 and 220,203.45 is: 308,699.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,203.45 : 308,699.55 = 220,203.45 : x
  2. Step 2: Convert to fraction form
    220,203.45/308,699.55 = 220,203.45/x
  3. Step 3: Cross multiply
    220,203.45x = 308,699.55 × 220,203.45
  4. Step 4: Simplify right side
    220,203.45x = 67,976,705,923.45
  5. Step 5: Solve for x
    x = 67,976,705,923.45/220,203.45
  6. Step 6: Final answer
    x = 308,699.55

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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.