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Finding the Fourth Proportional to 269,690.81, 402,325.76 and 262,360.43

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Solution

The fourth proportional to 269,690.81, 402,325.76 and 262,360.43 is: 391,390.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,690.81 : 402,325.76 = 262,360.43 : x
  2. Step 2: Convert to fraction form
    269,690.81/402,325.76 = 262,360.43/x
  3. Step 3: Cross multiply
    269,690.81x = 402,325.76 × 262,360.43
  4. Step 4: Simplify right side
    269,690.81x = 105,554,357,054.10
  5. Step 5: Solve for x
    x = 105,554,357,054.10/269,690.81
  6. Step 6: Final answer
    x = 391,390.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.