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Finding the Fourth Proportional to 439,615.10, 616,705.30 and 439,615.10

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Solution

The fourth proportional to 439,615.10, 616,705.30 and 439,615.10 is: 616,705.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,615.10 : 616,705.30 = 439,615.10 : x
  2. Step 2: Convert to fraction form
    439,615.10/616,705.30 = 439,615.10/x
  3. Step 3: Cross multiply
    439,615.10x = 616,705.30 × 439,615.10
  4. Step 4: Simplify right side
    439,615.10x = 271,112,962,130.03
  5. Step 5: Solve for x
    x = 271,112,962,130.03/439,615.10
  6. Step 6: Final answer
    x = 616,705.30

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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.