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Finding the Fourth Proportional to 183,446.78, 253,177.65 and 122,189.72

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Solution

The fourth proportional to 183,446.78, 253,177.65 and 122,189.72 is: 168,635.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,446.78 : 253,177.65 = 122,189.72 : x
  2. Step 2: Convert to fraction form
    183,446.78/253,177.65 = 122,189.72/x
  3. Step 3: Cross multiply
    183,446.78x = 253,177.65 × 122,189.72
  4. Step 4: Simplify right side
    183,446.78x = 30,935,704,897.87
  5. Step 5: Solve for x
    x = 30,935,704,897.87/183,446.78
  6. Step 6: Final answer
    x = 168,635.86

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1.5x scale

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.