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Finding the Fourth Proportional to 70,658,243.64, 105,987,356.82 and 22,789,187.64

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Solution

The fourth proportional to 70,658,243.64, 105,987,356.82 and 22,789,187.64 is: 34,183,778.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,658,243.64 : 105,987,356.82 = 22,789,187.64 : x
  2. Step 2: Convert to fraction form
    70,658,243.64/105,987,356.82 = 22,789,187.64/x
  3. Step 3: Cross multiply
    70,658,243.64x = 105,987,356.82 × 22,789,187.64
  4. Step 4: Simplify right side
    70,658,243.64x = 2,415,365,762,038,613.50
  5. Step 5: Solve for x
    x = 2,415,365,762,038,613.50/70,658,243.64
  6. Step 6: Final answer
    x = 34,183,778.67

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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.