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Finding the Fourth Proportional to 96,576, 133,275.36 and 56,317.68

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Solution

The fourth proportional to 96,576, 133,275.36 and 56,317.68 is: 77,718.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,576 : 133,275.36 = 56,317.68 : x
  2. Step 2: Convert to fraction form
    96,576/133,275.36 = 56,317.68/x
  3. Step 3: Cross multiply
    96,576x = 133,275.36 × 56,317.68
  4. Step 4: Simplify right side
    96,576x = 7,505,759,076.36
  5. Step 5: Solve for x
    x = 7,505,759,076.36/96,576
  6. Step 6: Final answer
    x = 77,718.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.