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Finding the Fourth Proportional to 357,211.71, 492,976.80 and 236,143.04

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Solution

The fourth proportional to 357,211.71, 492,976.80 and 236,143.04 is: 325,893.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,211.71 : 492,976.80 = 236,143.04 : x
  2. Step 2: Convert to fraction form
    357,211.71/492,976.80 = 236,143.04/x
  3. Step 3: Cross multiply
    357,211.71x = 492,976.80 × 236,143.04
  4. Step 4: Simplify right side
    357,211.71x = 116,413,037,736.59
  5. Step 5: Solve for x
    x = 116,413,037,736.59/357,211.71
  6. Step 6: Final answer
    x = 325,893.68

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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.