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Finding the Fourth Proportional to 196,707,985.60, 295,061,978.40 and 191,669,137.60

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Solution

The fourth proportional to 196,707,985.60, 295,061,978.40 and 191,669,137.60 is: 287,503,706.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,707,985.60 : 295,061,978.40 = 191,669,137.60 : x
  2. Step 2: Convert to fraction form
    196,707,985.60/295,061,978.40 = 191,669,137.60/x
  3. Step 3: Cross multiply
    196,707,985.60x = 295,061,978.40 × 191,669,137.60
  4. Step 4: Simplify right side
    196,707,985.60x = 56,554,274,938,477,824
  5. Step 5: Solve for x
    x = 56,554,274,938,477,824/196,707,985.60
  6. Step 6: Final answer
    x = 287,503,706.40

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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.