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Finding the Fourth Proportional to 172,491.60, 238,021.56 and 97,038.48

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Solution

The fourth proportional to 172,491.60, 238,021.56 and 97,038.48 is: 133,903.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,491.60 : 238,021.56 = 97,038.48 : x
  2. Step 2: Convert to fraction form
    172,491.60/238,021.56 = 97,038.48/x
  3. Step 3: Cross multiply
    172,491.60x = 238,021.56 × 97,038.48
  4. Step 4: Simplify right side
    172,491.60x = 23,097,250,389.63
  5. Step 5: Solve for x
    x = 23,097,250,389.63/172,491.60
  6. Step 6: Final answer
    x = 133,903.62

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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.