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Finding the Fourth Proportional to 185,804.70, 256,451.40 and 122,148.42

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Solution

The fourth proportional to 185,804.70, 256,451.40 and 122,148.42 is: 168,591.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,804.70 : 256,451.40 = 122,148.42 : x
  2. Step 2: Convert to fraction form
    185,804.70/256,451.40 = 122,148.42/x
  3. Step 3: Cross multiply
    185,804.70x = 256,451.40 × 122,148.42
  4. Step 4: Simplify right side
    185,804.70x = 31,325,133,316.79
  5. Step 5: Solve for x
    x = 31,325,133,316.79/185,804.70
  6. Step 6: Final answer
    x = 168,591.72

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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.