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Finding the Fourth Proportional to 193,071.52, 266,348.64 and 121,491.01

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Solution

The fourth proportional to 193,071.52, 266,348.64 and 121,491.01 is: 167,600.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,071.52 : 266,348.64 = 121,491.01 : x
  2. Step 2: Convert to fraction form
    193,071.52/266,348.64 = 121,491.01/x
  3. Step 3: Cross multiply
    193,071.52x = 266,348.64 × 121,491.01
  4. Step 4: Simplify right side
    193,071.52x = 32,358,965,285.73
  5. Step 5: Solve for x
    x = 32,358,965,285.73/193,071.52
  6. Step 6: Final answer
    x = 167,600.92

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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.