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Finding the Fourth Proportional to 178,112.55, 267,146.79 and 65,790.28

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Solution

The fourth proportional to 178,112.55, 267,146.79 and 65,790.28 is: 98,677.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,112.55 : 267,146.79 = 65,790.28 : x
  2. Step 2: Convert to fraction form
    178,112.55/267,146.79 = 65,790.28/x
  3. Step 3: Cross multiply
    178,112.55x = 267,146.79 × 65,790.28
  4. Step 4: Simplify right side
    178,112.55x = 17,575,661,786.25
  5. Step 5: Solve for x
    x = 17,575,661,786.25/178,112.55
  6. Step 6: Final answer
    x = 98,677.28

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1.5x scale

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.