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Finding the Fourth Proportional to 118,940.34, 178,437.96 and 40,052.64

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Solution

The fourth proportional to 118,940.34, 178,437.96 and 40,052.64 is: 60,088.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,940.34 : 178,437.96 = 40,052.64 : x
  2. Step 2: Convert to fraction form
    118,940.34/178,437.96 = 40,052.64/x
  3. Step 3: Cross multiply
    118,940.34x = 178,437.96 × 40,052.64
  4. Step 4: Simplify right side
    118,940.34x = 7,146,911,374.21
  5. Step 5: Solve for x
    x = 7,146,911,374.21/118,940.34
  6. Step 6: Final answer
    x = 60,088.20

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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.