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Finding the Fourth Proportional to 118,956, 178,503.12 and 53,292

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Solution

The fourth proportional to 118,956, 178,503.12 and 53,292 is: 79,968.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,956 : 178,503.12 = 53,292 : x
  2. Step 2: Convert to fraction form
    118,956/178,503.12 = 53,292/x
  3. Step 3: Cross multiply
    118,956x = 178,503.12 × 53,292
  4. Step 4: Simplify right side
    118,956x = 9,512,788,271.04
  5. Step 5: Solve for x
    x = 9,512,788,271.04/118,956
  6. Step 6: Final answer
    x = 79,968.97

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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.