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Finding the Fourth Proportional to 539,879.22, 745,038.90 and 298,167.84

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Solution

The fourth proportional to 539,879.22, 745,038.90 and 298,167.84 is: 411,474.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,879.22 : 745,038.90 = 298,167.84 : x
  2. Step 2: Convert to fraction form
    539,879.22/745,038.90 = 298,167.84/x
  3. Step 3: Cross multiply
    539,879.22x = 745,038.90 × 298,167.84
  4. Step 4: Simplify right side
    539,879.22x = 222,146,639,528.98
  5. Step 5: Solve for x
    x = 222,146,639,528.98/539,879.22
  6. Step 6: Final answer
    x = 411,474.70

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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.