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Finding the Fourth Proportional to 216,698,601.60, 325,087,268.40 and 71,091,640.80

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Solution

The fourth proportional to 216,698,601.60, 325,087,268.40 and 71,091,640.80 is: 106,650,375.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,698,601.60 : 325,087,268.40 = 71,091,640.80 : x
  2. Step 2: Convert to fraction form
    216,698,601.60/325,087,268.40 = 71,091,640.80/x
  3. Step 3: Cross multiply
    216,698,601.60x = 325,087,268.40 × 71,091,640.80
  4. Step 4: Simplify right side
    216,698,601.60x = 23,110,987,313,745,988
  5. Step 5: Solve for x
    x = 23,110,987,313,745,988/216,698,601.60
  6. Step 6: Final answer
    x = 106,650,375.88

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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.