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Finding the Fourth Proportional to 316,778.66, 475,324.10 and 148,310.39

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Solution

The fourth proportional to 316,778.66, 475,324.10 and 148,310.39 is: 222,538.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,778.66 : 475,324.10 = 148,310.39 : x
  2. Step 2: Convert to fraction form
    316,778.66/475,324.10 = 148,310.39/x
  3. Step 3: Cross multiply
    316,778.66x = 475,324.10 × 148,310.39
  4. Step 4: Simplify right side
    316,778.66x = 70,495,500,641.55
  5. Step 5: Solve for x
    x = 70,495,500,641.55/316,778.66
  6. Step 6: Final answer
    x = 222,538.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.