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Finding the Fourth Proportional to 118,048.60, 177,072.90 and 105,801.40

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Solution

The fourth proportional to 118,048.60, 177,072.90 and 105,801.40 is: 158,702.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,048.60 : 177,072.90 = 105,801.40 : x
  2. Step 2: Convert to fraction form
    118,048.60/177,072.90 = 105,801.40/x
  3. Step 3: Cross multiply
    118,048.60x = 177,072.90 × 105,801.40
  4. Step 4: Simplify right side
    118,048.60x = 18,734,560,722.06
  5. Step 5: Solve for x
    x = 18,734,560,722.06/118,048.60
  6. Step 6: Final answer
    x = 158,702.10

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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.