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Finding the Fourth Proportional to 448,043.40, 672,842.70 and 238,091.40

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Solution

The fourth proportional to 448,043.40, 672,842.70 and 238,091.40 is: 357,550.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,043.40 : 672,842.70 = 238,091.40 : x
  2. Step 2: Convert to fraction form
    448,043.40/672,842.70 = 238,091.40/x
  3. Step 3: Cross multiply
    448,043.40x = 672,842.70 × 238,091.40
  4. Step 4: Simplify right side
    448,043.40x = 160,198,060,422.78
  5. Step 5: Solve for x
    x = 160,198,060,422.78/448,043.40
  6. Step 6: Final answer
    x = 357,550.32

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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.