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Finding the Fourth Proportional to 439,829.10, 617,004.90 and 439,829.10

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Solution

The fourth proportional to 439,829.10, 617,004.90 and 439,829.10 is: 617,004.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,829.10 : 617,004.90 = 439,829.10 : x
  2. Step 2: Convert to fraction form
    439,829.10/617,004.90 = 439,829.10/x
  3. Step 3: Cross multiply
    439,829.10x = 617,004.90 × 439,829.10
  4. Step 4: Simplify right side
    439,829.10x = 271,376,709,862.59
  5. Step 5: Solve for x
    x = 271,376,709,862.59/439,829.10
  6. Step 6: Final answer
    x = 617,004.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.