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Finding the Fourth Proportional to 173,128.36, 238,916.13 and 96,643.03

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Solution

The fourth proportional to 173,128.36, 238,916.13 and 96,643.03 is: 133,366.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,128.36 : 238,916.13 = 96,643.03 : x
  2. Step 2: Convert to fraction form
    173,128.36/238,916.13 = 96,643.03/x
  3. Step 3: Cross multiply
    173,128.36x = 238,916.13 × 96,643.03
  4. Step 4: Simplify right side
    173,128.36x = 23,089,578,719.07
  5. Step 5: Solve for x
    x = 23,089,578,719.07/173,128.36
  6. Step 6: Final answer
    x = 133,366.82

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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.