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Finding the Fourth Proportional to 768,062.37, 1,059,327.13 and 492,446.54

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Solution

The fourth proportional to 768,062.37, 1,059,327.13 and 492,446.54 is: 679,192.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,062.37 : 1,059,327.13 = 492,446.54 : x
  2. Step 2: Convert to fraction form
    768,062.37/1,059,327.13 = 492,446.54/x
  3. Step 3: Cross multiply
    768,062.37x = 1,059,327.13 × 492,446.54
  4. Step 4: Simplify right side
    768,062.37x = 521,661,977,434.40
  5. Step 5: Solve for x
    x = 521,661,977,434.40/768,062.37
  6. Step 6: Final answer
    x = 679,192.21

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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.