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Finding the Fourth Proportional to 353,012.90, 487,161.54 and 191,867.96

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Solution

The fourth proportional to 353,012.90, 487,161.54 and 191,867.96 is: 264,779.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,012.90 : 487,161.54 = 191,867.96 : x
  2. Step 2: Convert to fraction form
    353,012.90/487,161.54 = 191,867.96/x
  3. Step 3: Cross multiply
    353,012.90x = 487,161.54 × 191,867.96
  4. Step 4: Simplify right side
    353,012.90x = 93,470,690,870.26
  5. Step 5: Solve for x
    x = 93,470,690,870.26/353,012.90
  6. Step 6: Final answer
    x = 264,779.82

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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.