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Finding the Fourth Proportional to 209,953,194.40, 314,929,791.60 and 194,647,693.60

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Solution

The fourth proportional to 209,953,194.40, 314,929,791.60 and 194,647,693.60 is: 291,971,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,953,194.40 : 314,929,791.60 = 194,647,693.60 : x
  2. Step 2: Convert to fraction form
    209,953,194.40/314,929,791.60 = 194,647,693.60/x
  3. Step 3: Cross multiply
    209,953,194.40x = 314,929,791.60 × 194,647,693.60
  4. Step 4: Simplify right side
    209,953,194.40x = 61,300,357,580,868,656
  5. Step 5: Solve for x
    x = 61,300,357,580,868,656/209,953,194.40
  6. Step 6: Final answer
    x = 291,971,540.40

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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.