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Finding the Fourth Proportional to 555,752.11, 766,514.73 and 478,359.46

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Solution

The fourth proportional to 555,752.11, 766,514.73 and 478,359.46 is: 659,771.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,752.11 : 766,514.73 = 478,359.46 : x
  2. Step 2: Convert to fraction form
    555,752.11/766,514.73 = 478,359.46/x
  3. Step 3: Cross multiply
    555,752.11x = 766,514.73 × 478,359.46
  4. Step 4: Simplify right side
    555,752.11x = 366,669,572,324.85
  5. Step 5: Solve for x
    x = 366,669,572,324.85/555,752.11
  6. Step 6: Final answer
    x = 659,771.80

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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.