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Finding the Fourth Proportional to 328,128.66, 492,195.42 and 117,768.42

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Solution

The fourth proportional to 328,128.66, 492,195.42 and 117,768.42 is: 176,653.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,128.66 : 492,195.42 = 117,768.42 : x
  2. Step 2: Convert to fraction form
    328,128.66/492,195.42 = 117,768.42/x
  3. Step 3: Cross multiply
    328,128.66x = 492,195.42 × 117,768.42
  4. Step 4: Simplify right side
    328,128.66x = 57,965,076,944.64
  5. Step 5: Solve for x
    x = 57,965,076,944.64/328,128.66
  6. Step 6: Final answer
    x = 176,653.50

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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.