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Finding the Fourth Proportional to 618,918.66, 928,447.38 and 555,347.94

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Solution

The fourth proportional to 618,918.66, 928,447.38 and 555,347.94 is: 833,084.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,918.66 : 928,447.38 = 555,347.94 : x
  2. Step 2: Convert to fraction form
    618,918.66/928,447.38 = 555,347.94/x
  3. Step 3: Cross multiply
    618,918.66x = 928,447.38 × 555,347.94
  4. Step 4: Simplify right side
    618,918.66x = 515,611,339,881.40
  5. Step 5: Solve for x
    x = 515,611,339,881.40/618,918.66
  6. Step 6: Final answer
    x = 833,084.17

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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.