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Finding the Fourth Proportional to 492,347.56, 679,439.65 and 265,993.06

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Solution

The fourth proportional to 492,347.56, 679,439.65 and 265,993.06 is: 367,070.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,347.56 : 679,439.65 = 265,993.06 : x
  2. Step 2: Convert to fraction form
    492,347.56/679,439.65 = 265,993.06/x
  3. Step 3: Cross multiply
    492,347.56x = 679,439.65 × 265,993.06
  4. Step 4: Simplify right side
    492,347.56x = 180,726,231,588.83
  5. Step 5: Solve for x
    x = 180,726,231,588.83/492,347.56
  6. Step 6: Final answer
    x = 367,070.43

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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.