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Finding the Fourth Proportional to 169,465.10, 253,887.82 and 79,342.47

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Solution

The fourth proportional to 169,465.10, 253,887.82 and 79,342.47 is: 118,868.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,465.10 : 253,887.82 = 79,342.47 : x
  2. Step 2: Convert to fraction form
    169,465.10/253,887.82 = 79,342.47/x
  3. Step 3: Cross multiply
    169,465.10x = 253,887.82 × 79,342.47
  4. Step 4: Simplify right side
    169,465.10x = 20,144,086,543.36
  5. Step 5: Solve for x
    x = 20,144,086,543.36/169,465.10
  6. Step 6: Final answer
    x = 118,868.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.