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Finding the Fourth Proportional to 79,357.62, 118,985.79 and 34,354.74

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Solution

The fourth proportional to 79,357.62, 118,985.79 and 34,354.74 is: 51,510.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,357.62 : 118,985.79 = 34,354.74 : x
  2. Step 2: Convert to fraction form
    79,357.62/118,985.79 = 34,354.74/x
  3. Step 3: Cross multiply
    79,357.62x = 118,985.79 × 34,354.74
  4. Step 4: Simplify right side
    79,357.62x = 4,087,725,879.14
  5. Step 5: Solve for x
    x = 4,087,725,879.14/79,357.62
  6. Step 6: Final answer
    x = 51,510.19

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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.