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Finding the Fourth Proportional to 517,245.12, 713,793.60 and 290,885.76

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Solution

The fourth proportional to 517,245.12, 713,793.60 and 290,885.76 is: 401,419.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,245.12 : 713,793.60 = 290,885.76 : x
  2. Step 2: Convert to fraction form
    517,245.12/713,793.60 = 290,885.76/x
  3. Step 3: Cross multiply
    517,245.12x = 713,793.60 × 290,885.76
  4. Step 4: Simplify right side
    517,245.12x = 207,632,393,819.14
  5. Step 5: Solve for x
    x = 207,632,393,819.14/517,245.12
  6. Step 6: Final answer
    x = 401,419.72

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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.