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Finding the Fourth Proportional to 118,419.40, 177,564.30 and 48,219.40

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Solution

The fourth proportional to 118,419.40, 177,564.30 and 48,219.40 is: 72,302.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,419.40 : 177,564.30 = 48,219.40 : x
  2. Step 2: Convert to fraction form
    118,419.40/177,564.30 = 48,219.40/x
  3. Step 3: Cross multiply
    118,419.40x = 177,564.30 × 48,219.40
  4. Step 4: Simplify right side
    118,419.40x = 8,562,044,007.42
  5. Step 5: Solve for x
    x = 8,562,044,007.42/118,419.40
  6. Step 6: Final answer
    x = 72,302.71

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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.