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Finding the Fourth Proportional to 192,086.16, 264,761.64 and 128,400.72

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Solution

The fourth proportional to 192,086.16, 264,761.64 and 128,400.72 is: 176,980.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,086.16 : 264,761.64 = 128,400.72 : x
  2. Step 2: Convert to fraction form
    192,086.16/264,761.64 = 128,400.72/x
  3. Step 3: Cross multiply
    192,086.16x = 264,761.64 × 128,400.72
  4. Step 4: Simplify right side
    192,086.16x = 33,995,585,204.38
  5. Step 5: Solve for x
    x = 33,995,585,204.38/192,086.16
  6. Step 6: Final answer
    x = 176,980.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.