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Finding the Fourth Proportional to 572,354.24, 789,884.64 and 317,709.68

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Solution

The fourth proportional to 572,354.24, 789,884.64 and 317,709.68 is: 438,459.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,354.24 : 789,884.64 = 317,709.68 : x
  2. Step 2: Convert to fraction form
    572,354.24/789,884.64 = 317,709.68/x
  3. Step 3: Cross multiply
    572,354.24x = 789,884.64 × 317,709.68
  4. Step 4: Simplify right side
    572,354.24x = 250,953,996,211.32
  5. Step 5: Solve for x
    x = 250,953,996,211.32/572,354.24
  6. Step 6: Final answer
    x = 438,459.22

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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.