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Finding the Fourth Proportional to 673,239.28, 929,065 and 367,311.20

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Solution

The fourth proportional to 673,239.28, 929,065 and 367,311.20 is: 506,886.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,239.28 : 929,065 = 367,311.20 : x
  2. Step 2: Convert to fraction form
    673,239.28/929,065 = 367,311.20/x
  3. Step 3: Cross multiply
    673,239.28x = 929,065 × 367,311.20
  4. Step 4: Simplify right side
    673,239.28x = 341,255,980,028
  5. Step 5: Solve for x
    x = 341,255,980,028/673,239.28
  6. Step 6: Final answer
    x = 506,886.62

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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.