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Finding the Fourth Proportional to 64,721.36, 97,043.16 and 43,881.68

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Solution

The fourth proportional to 64,721.36, 97,043.16 and 43,881.68 is: 65,796.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,721.36 : 97,043.16 = 43,881.68 : x
  2. Step 2: Convert to fraction form
    64,721.36/97,043.16 = 43,881.68/x
  3. Step 3: Cross multiply
    64,721.36x = 97,043.16 × 43,881.68
  4. Step 4: Simplify right side
    64,721.36x = 4,258,416,893.31
  5. Step 5: Solve for x
    x = 4,258,416,893.31/64,721.36
  6. Step 6: Final answer
    x = 65,796.16

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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.