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Finding the Fourth Proportional to 698,717.58, 964,110.12 and 392,751.51

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Solution

The fourth proportional to 698,717.58, 964,110.12 and 392,751.51 is: 541,929.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,717.58 : 964,110.12 = 392,751.51 : x
  2. Step 2: Convert to fraction form
    698,717.58/964,110.12 = 392,751.51/x
  3. Step 3: Cross multiply
    698,717.58x = 964,110.12 × 392,751.51
  4. Step 4: Simplify right side
    698,717.58x = 378,655,705,436.28
  5. Step 5: Solve for x
    x = 378,655,705,436.28/698,717.58
  6. Step 6: Final answer
    x = 541,929.55

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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.