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Finding the Fourth Proportional to 432,009.80, 647,139.90 and 244,802.60

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Solution

The fourth proportional to 432,009.80, 647,139.90 and 244,802.60 is: 366,708.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,009.80 : 647,139.90 = 244,802.60 : x
  2. Step 2: Convert to fraction form
    432,009.80/647,139.90 = 244,802.60/x
  3. Step 3: Cross multiply
    432,009.80x = 647,139.90 × 244,802.60
  4. Step 4: Simplify right side
    432,009.80x = 158,421,530,083.74
  5. Step 5: Solve for x
    x = 158,421,530,083.74/432,009.80
  6. Step 6: Final answer
    x = 366,708.19

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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.