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Finding the Fourth Proportional to 519,028.43, 716,258.23 and 289,572.06

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Solution

The fourth proportional to 519,028.43, 716,258.23 and 289,572.06 is: 399,608.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,028.43 : 716,258.23 = 289,572.06 : x
  2. Step 2: Convert to fraction form
    519,028.43/716,258.23 = 289,572.06/x
  3. Step 3: Cross multiply
    519,028.43x = 716,258.23 × 289,572.06
  4. Step 4: Simplify right side
    519,028.43x = 207,408,370,714.98
  5. Step 5: Solve for x
    x = 207,408,370,714.98/519,028.43
  6. Step 6: Final answer
    x = 399,608.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.