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Finding the Fourth Proportional to 519,862.76, 778,706.33 and 418,110.88

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Solution

The fourth proportional to 519,862.76, 778,706.33 and 418,110.88 is: 626,291.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,862.76 : 778,706.33 = 418,110.88 : x
  2. Step 2: Convert to fraction form
    519,862.76/778,706.33 = 418,110.88/x
  3. Step 3: Cross multiply
    519,862.76x = 778,706.33 × 418,110.88
  4. Step 4: Simplify right side
    519,862.76x = 325,585,587,996.38
  5. Step 5: Solve for x
    x = 325,585,587,996.38/519,862.76
  6. Step 6: Final answer
    x = 626,291.42

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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.