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Finding the Fourth Proportional to 218,742.48, 301,864.44 and 118,140.48

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Solution

The fourth proportional to 218,742.48, 301,864.44 and 118,140.48 is: 163,033.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,742.48 : 301,864.44 = 118,140.48 : x
  2. Step 2: Convert to fraction form
    218,742.48/301,864.44 = 118,140.48/x
  3. Step 3: Cross multiply
    218,742.48x = 301,864.44 × 118,140.48
  4. Step 4: Simplify right side
    218,742.48x = 35,662,409,836.53
  5. Step 5: Solve for x
    x = 35,662,409,836.53/218,742.48
  6. Step 6: Final answer
    x = 163,033.76

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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.