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Finding the Fourth Proportional to 196,992,811.30, 295,489,216.95 and 53,385,643.30

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Solution

The fourth proportional to 196,992,811.30, 295,489,216.95 and 53,385,643.30 is: 80,078,464.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,992,811.30 : 295,489,216.95 = 53,385,643.30 : x
  2. Step 2: Convert to fraction form
    196,992,811.30/295,489,216.95 = 53,385,643.30/x
  3. Step 3: Cross multiply
    196,992,811.30x = 295,489,216.95 × 53,385,643.30
  4. Step 4: Simplify right side
    196,992,811.30x = 15,774,881,935,089,012
  5. Step 5: Solve for x
    x = 15,774,881,935,089,012/196,992,811.30
  6. Step 6: Final answer
    x = 80,078,464.95

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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.