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Finding the Fourth Proportional to 555,479.56, 765,988.50 and 475,172.92

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Solution

The fourth proportional to 555,479.56, 765,988.50 and 475,172.92 is: 655,248.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,479.56 : 765,988.50 = 475,172.92 : x
  2. Step 2: Convert to fraction form
    555,479.56/765,988.50 = 475,172.92/x
  3. Step 3: Cross multiply
    555,479.56x = 765,988.50 × 475,172.92
  4. Step 4: Simplify right side
    555,479.56x = 363,976,992,231.42
  5. Step 5: Solve for x
    x = 363,976,992,231.42/555,479.56
  6. Step 6: Final answer
    x = 655,248.22

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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.