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Finding the Fourth Proportional to 295,555.50, 407,869.18 and 168,239.28

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Solution

The fourth proportional to 295,555.50, 407,869.18 and 168,239.28 is: 232,171.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,555.50 : 407,869.18 = 168,239.28 : x
  2. Step 2: Convert to fraction form
    295,555.50/407,869.18 = 168,239.28/x
  3. Step 3: Cross multiply
    295,555.50x = 407,869.18 × 168,239.28
  4. Step 4: Simplify right side
    295,555.50x = 68,619,617,177.39
  5. Step 5: Solve for x
    x = 68,619,617,177.39/295,555.50
  6. Step 6: Final answer
    x = 232,171.68

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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.