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Finding the Fourth Proportional to 64,911.13, 97,169.46 and 57,956.47

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Solution

The fourth proportional to 64,911.13, 97,169.46 and 57,956.47 is: 86,758.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,911.13 : 97,169.46 = 57,956.47 : x
  2. Step 2: Convert to fraction form
    64,911.13/97,169.46 = 57,956.47/x
  3. Step 3: Cross multiply
    64,911.13x = 97,169.46 × 57,956.47
  4. Step 4: Simplify right side
    64,911.13x = 5,631,598,893.41
  5. Step 5: Solve for x
    x = 5,631,598,893.41/64,911.13
  6. Step 6: Final answer
    x = 86,758.60

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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.