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Finding the Fourth Proportional to 448,057.80, 672,086.70 and 282,169.80

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Solution

The fourth proportional to 448,057.80, 672,086.70 and 282,169.80 is: 423,254.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,057.80 : 672,086.70 = 282,169.80 : x
  2. Step 2: Convert to fraction form
    448,057.80/672,086.70 = 282,169.80/x
  3. Step 3: Cross multiply
    448,057.80x = 672,086.70 × 282,169.80
  4. Step 4: Simplify right side
    448,057.80x = 189,642,569,721.66
  5. Step 5: Solve for x
    x = 189,642,569,721.66/448,057.80
  6. Step 6: Final answer
    x = 423,254.70

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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.