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Finding the Fourth Proportional to 929,495.20, 1,392,169.20 and 763,607.20

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Solution

The fourth proportional to 929,495.20, 1,392,169.20 and 763,607.20 is: 1,143,707.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,495.20 : 1,392,169.20 = 763,607.20 : x
  2. Step 2: Convert to fraction form
    929,495.20/1,392,169.20 = 763,607.20/x
  3. Step 3: Cross multiply
    929,495.20x = 1,392,169.20 × 763,607.20
  4. Step 4: Simplify right side
    929,495.20x = 1,063,070,424,738.24
  5. Step 5: Solve for x
    x = 1,063,070,424,738.24/929,495.20
  6. Step 6: Final answer
    x = 1,143,707.28

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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.