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Finding the Fourth Proportional to 531,358.53, 797,212.77 and 215,730.69

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Solution

The fourth proportional to 531,358.53, 797,212.77 and 215,730.69 is: 323,667.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,358.53 : 797,212.77 = 215,730.69 : x
  2. Step 2: Convert to fraction form
    531,358.53/797,212.77 = 215,730.69/x
  3. Step 3: Cross multiply
    531,358.53x = 797,212.77 × 215,730.69
  4. Step 4: Simplify right side
    531,358.53x = 171,983,260,948.91
  5. Step 5: Solve for x
    x = 171,983,260,948.91/531,358.53
  6. Step 6: Final answer
    x = 323,667.07

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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.