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Finding the Fourth Proportional to 312,616.63, 431,411.00 and 169,376.67

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Solution

The fourth proportional to 312,616.63, 431,411.00 and 169,376.67 is: 233,739.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,616.63 : 431,411.00 = 169,376.67 : x
  2. Step 2: Convert to fraction form
    312,616.63/431,411.00 = 169,376.67/x
  3. Step 3: Cross multiply
    312,616.63x = 431,411.00 × 169,376.67
  4. Step 4: Simplify right side
    312,616.63x = 73,070,957,734.49
  5. Step 5: Solve for x
    x = 73,070,957,734.49/312,616.63
  6. Step 6: Final answer
    x = 233,739.83

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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.