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Finding the Fourth Proportional to 312,019.62, 430,584.39 and 176,054.58

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Solution

The fourth proportional to 312,019.62, 430,584.39 and 176,054.58 is: 242,953.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,019.62 : 430,584.39 = 176,054.58 : x
  2. Step 2: Convert to fraction form
    312,019.62/430,584.39 = 176,054.58/x
  3. Step 3: Cross multiply
    312,019.62x = 430,584.39 × 176,054.58
  4. Step 4: Simplify right side
    312,019.62x = 75,806,353,936.01
  5. Step 5: Solve for x
    x = 75,806,353,936.01/312,019.62
  6. Step 6: Final answer
    x = 242,953.81

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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.