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Finding the Fourth Proportional to 64,777,971.44, 97,166,957.16 and 21,647,174.81

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Solution

The fourth proportional to 64,777,971.44, 97,166,957.16 and 21,647,174.81 is: 32,470,762.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,777,971.44 : 97,166,957.16 = 21,647,174.81 : x
  2. Step 2: Convert to fraction form
    64,777,971.44/97,166,957.16 = 21,647,174.81/x
  3. Step 3: Cross multiply
    64,777,971.44x = 97,166,957.16 × 21,647,174.81
  4. Step 4: Simplify right side
    64,777,971.44x = 2,103,390,107,813,214.50
  5. Step 5: Solve for x
    x = 2,103,390,107,813,214.50/64,777,971.44
  6. Step 6: Final answer
    x = 32,470,762.22

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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.