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Finding the Fourth Proportional to 312,186.54, 430,818.19 and 168,947.62

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Solution

The fourth proportional to 312,186.54, 430,818.19 and 168,947.62 is: 233,148.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,186.54 : 430,818.19 = 168,947.62 : x
  2. Step 2: Convert to fraction form
    312,186.54/430,818.19 = 168,947.62/x
  3. Step 3: Cross multiply
    312,186.54x = 430,818.19 × 168,947.62
  4. Step 4: Simplify right side
    312,186.54x = 72,785,707,008.47
  5. Step 5: Solve for x
    x = 72,785,707,008.47/312,186.54
  6. Step 6: Final answer
    x = 233,148.13

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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.