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Finding the Fourth Proportional to 285,680.61, 394,230.70 and 156,614.67

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Solution

The fourth proportional to 285,680.61, 394,230.70 and 156,614.67 is: 216,123.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,680.61 : 394,230.70 = 156,614.67 : x
  2. Step 2: Convert to fraction form
    285,680.61/394,230.70 = 156,614.67/x
  3. Step 3: Cross multiply
    285,680.61x = 394,230.70 × 156,614.67
  4. Step 4: Simplify right side
    285,680.61x = 61,742,308,621.68
  5. Step 5: Solve for x
    x = 61,742,308,621.68/285,680.61
  6. Step 6: Final answer
    x = 216,123.56

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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.