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Finding the Fourth Proportional to 201,705.60, 278,351.41 and 111,059.70

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Solution

The fourth proportional to 201,705.60, 278,351.41 and 111,059.70 is: 153,261.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,705.60 : 278,351.41 = 111,059.70 : x
  2. Step 2: Convert to fraction form
    201,705.60/278,351.41 = 111,059.70/x
  3. Step 3: Cross multiply
    201,705.60x = 278,351.41 × 111,059.70
  4. Step 4: Simplify right side
    201,705.60x = 30,913,624,089.18
  5. Step 5: Solve for x
    x = 30,913,624,089.18/201,705.60
  6. Step 6: Final answer
    x = 153,261.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.