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Finding the Fourth Proportional to 239,298.22, 358,986.75 and 89,590.78

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Solution

The fourth proportional to 239,298.22, 358,986.75 and 89,590.78 is: 134,400.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,298.22 : 358,986.75 = 89,590.78 : x
  2. Step 2: Convert to fraction form
    239,298.22/358,986.75 = 89,590.78/x
  3. Step 3: Cross multiply
    239,298.22x = 358,986.75 × 89,590.78
  4. Step 4: Simplify right side
    239,298.22x = 32,161,902,942.17
  5. Step 5: Solve for x
    x = 32,161,902,942.17/239,298.22
  6. Step 6: Final answer
    x = 134,400.93

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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.