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Finding the Fourth Proportional to 223,705.20, 335,946.60 and 118,729.20

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Solution

The fourth proportional to 223,705.20, 335,946.60 and 118,729.20 is: 178,300.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,705.20 : 335,946.60 = 118,729.20 : x
  2. Step 2: Convert to fraction form
    223,705.20/335,946.60 = 118,729.20/x
  3. Step 3: Cross multiply
    223,705.20x = 335,946.60 × 118,729.20
  4. Step 4: Simplify right side
    223,705.20x = 39,886,671,060.72
  5. Step 5: Solve for x
    x = 39,886,671,060.72/223,705.20
  6. Step 6: Final answer
    x = 178,300.15

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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.