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Finding the Fourth Proportional to 396,411.76, 546,869.64 and 235,273.60

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Solution

The fourth proportional to 396,411.76, 546,869.64 and 235,273.60 is: 324,571.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,411.76 : 546,869.64 = 235,273.60 : x
  2. Step 2: Convert to fraction form
    396,411.76/546,869.64 = 235,273.60/x
  3. Step 3: Cross multiply
    396,411.76x = 546,869.64 × 235,273.60
  4. Step 4: Simplify right side
    396,411.76x = 128,663,988,933.50
  5. Step 5: Solve for x
    x = 128,663,988,933.50/396,411.76
  6. Step 6: Final answer
    x = 324,571.57

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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.