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Finding the Fourth Proportional to 478,816.33, 718,503.92 and 265,763.04

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Solution

The fourth proportional to 478,816.33, 718,503.92 and 265,763.04 is: 398,799.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,816.33 : 718,503.92 = 265,763.04 : x
  2. Step 2: Convert to fraction form
    478,816.33/718,503.92 = 265,763.04/x
  3. Step 3: Cross multiply
    478,816.33x = 718,503.92 × 265,763.04
  4. Step 4: Simplify right side
    478,816.33x = 190,951,786,695.52
  5. Step 5: Solve for x
    x = 190,951,786,695.52/478,816.33
  6. Step 6: Final answer
    x = 398,799.66

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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.