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Finding the Fourth Proportional to 541,805.70, 812,708.55 and 276,085.20

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Solution

The fourth proportional to 541,805.70, 812,708.55 and 276,085.20 is: 414,127.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,805.70 : 812,708.55 = 276,085.20 : x
  2. Step 2: Convert to fraction form
    541,805.70/812,708.55 = 276,085.20/x
  3. Step 3: Cross multiply
    541,805.70x = 812,708.55 × 276,085.20
  4. Step 4: Simplify right side
    541,805.70x = 224,376,802,568.46
  5. Step 5: Solve for x
    x = 224,376,802,568.46/541,805.70
  6. Step 6: Final answer
    x = 414,127.80

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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.