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Finding the Fourth Proportional to 1,256,381.73, 1,884,782.79 and 986,499

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Solution

The fourth proportional to 1,256,381.73, 1,884,782.79 and 986,499 is: 1,479,913.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256,381.73 : 1,884,782.79 = 986,499 : x
  2. Step 2: Convert to fraction form
    1,256,381.73/1,884,782.79 = 986,499/x
  3. Step 3: Cross multiply
    1,256,381.73x = 1,884,782.79 × 986,499
  4. Step 4: Simplify right side
    1,256,381.73x = 1,859,336,337,552.21
  5. Step 5: Solve for x
    x = 1,859,336,337,552.21/1,256,381.73
  6. Step 6: Final answer
    x = 1,479,913.54

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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.