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Finding the Fourth Proportional to 286,012.48, 394,696.14 and 156,953.12

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Solution

The fourth proportional to 286,012.48, 394,696.14 and 156,953.12 is: 216,594.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,012.48 : 394,696.14 = 156,953.12 : x
  2. Step 2: Convert to fraction form
    286,012.48/394,696.14 = 156,953.12/x
  3. Step 3: Cross multiply
    286,012.48x = 394,696.14 × 156,953.12
  4. Step 4: Simplify right side
    286,012.48x = 61,948,790,624.96
  5. Step 5: Solve for x
    x = 61,948,790,624.96/286,012.48
  6. Step 6: Final answer
    x = 216,594.71

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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.