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Finding the Fourth Proportional to 118,663.10, 178,117.70 and 79,493.93

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Solution

The fourth proportional to 118,663.10, 178,117.70 and 79,493.93 is: 119,323.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,663.10 : 178,117.70 = 79,493.93 : x
  2. Step 2: Convert to fraction form
    118,663.10/178,117.70 = 79,493.93/x
  3. Step 3: Cross multiply
    118,663.10x = 178,117.70 × 79,493.93
  4. Step 4: Simplify right side
    118,663.10x = 14,159,275,975.56
  5. Step 5: Solve for x
    x = 14,159,275,975.56/118,663.10
  6. Step 6: Final answer
    x = 119,323.33

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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.