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Finding the Fourth Proportional to 118,675,806.40, 178,045,202.40 and 41,990,838.40

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Solution

The fourth proportional to 118,675,806.40, 178,045,202.40 and 41,990,838.40 is: 62,997,400.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,675,806.40 : 178,045,202.40 = 41,990,838.40 : x
  2. Step 2: Convert to fraction form
    118,675,806.40/178,045,202.40 = 41,990,838.40/x
  3. Step 3: Cross multiply
    118,675,806.40x = 178,045,202.40 × 41,990,838.40
  4. Step 4: Simplify right side
    118,675,806.40x = 7,476,267,321,873,692
  5. Step 5: Solve for x
    x = 7,476,267,321,873,692/118,675,806.40
  6. Step 6: Final answer
    x = 62,997,400.64

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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.