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Finding the Fourth Proportional to 64,720.86, 97,042.41 and 43,881.18

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Solution

The fourth proportional to 64,720.86, 97,042.41 and 43,881.18 is: 65,795.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,720.86 : 97,042.41 = 43,881.18 : x
  2. Step 2: Convert to fraction form
    64,720.86/97,042.41 = 43,881.18/x
  3. Step 3: Cross multiply
    64,720.86x = 97,042.41 × 43,881.18
  4. Step 4: Simplify right side
    64,720.86x = 4,258,335,460.84
  5. Step 5: Solve for x
    x = 4,258,335,460.84/64,720.86
  6. Step 6: Final answer
    x = 65,795.41

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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.