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Finding the Fourth Proportional to 217,280,186.60, 325,978,016.70 and 94,405,778.60

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Solution

The fourth proportional to 217,280,186.60, 325,978,016.70 and 94,405,778.60 is: 141,633,753.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,280,186.60 : 325,978,016.70 = 94,405,778.60 : x
  2. Step 2: Convert to fraction form
    217,280,186.60/325,978,016.70 = 94,405,778.60/x
  3. Step 3: Cross multiply
    217,280,186.60x = 325,978,016.70 × 94,405,778.60
  4. Step 4: Simplify right side
    217,280,186.60x = 30,774,208,473,047,300
  5. Step 5: Solve for x
    x = 30,774,208,473,047,300/217,280,186.60
  6. Step 6: Final answer
    x = 141,633,753.89

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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.