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Finding the Fourth Proportional to 555,417.12, 765,902.22 and 475,110.48

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Solution

The fourth proportional to 555,417.12, 765,902.22 and 475,110.48 is: 655,161.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,417.12 : 765,902.22 = 475,110.48 : x
  2. Step 2: Convert to fraction form
    555,417.12/765,902.22 = 475,110.48/x
  3. Step 3: Cross multiply
    555,417.12x = 765,902.22 × 475,110.48
  4. Step 4: Simplify right side
    555,417.12x = 363,888,171,377.27
  5. Step 5: Solve for x
    x = 363,888,171,377.27/555,417.12
  6. Step 6: Final answer
    x = 655,161.96

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1.5x scale

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.