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Finding the Fourth Proportional to 312,196.26, 430,830.81 and 168,956.33

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Solution

The fourth proportional to 312,196.26, 430,830.81 and 168,956.33 is: 233,159.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,196.26 : 430,830.81 = 168,956.33 : x
  2. Step 2: Convert to fraction form
    312,196.26/430,830.81 = 168,956.33/x
  3. Step 3: Cross multiply
    312,196.26x = 430,830.81 × 168,956.33
  4. Step 4: Simplify right side
    312,196.26x = 72,791,593,585.60
  5. Step 5: Solve for x
    x = 72,791,593,585.60/312,196.26
  6. Step 6: Final answer
    x = 233,159.72

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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.