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Finding the Fourth Proportional to 118,505,116.80, 166,020,537.60 and 118,505,116.80

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Solution

The fourth proportional to 118,505,116.80, 166,020,537.60 and 118,505,116.80 is: 166,020,537.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,505,116.80 : 166,020,537.60 = 118,505,116.80 : x
  2. Step 2: Convert to fraction form
    118,505,116.80/166,020,537.60 = 118,505,116.80/x
  3. Step 3: Cross multiply
    118,505,116.80x = 166,020,537.60 × 118,505,116.80
  4. Step 4: Simplify right side
    118,505,116.80x = 19,674,283,199,486,792
  5. Step 5: Solve for x
    x = 19,674,283,199,486,792/118,505,116.80
  6. Step 6: Final answer
    x = 166,020,537.60

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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.