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Finding the Fourth Proportional to 296,714.84, 445,087.65 and 86,369.18

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Solution

The fourth proportional to 296,714.84, 445,087.65 and 86,369.18 is: 129,558.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,714.84 : 445,087.65 = 86,369.18 : x
  2. Step 2: Convert to fraction form
    296,714.84/445,087.65 = 86,369.18/x
  3. Step 3: Cross multiply
    296,714.84x = 445,087.65 × 86,369.18
  4. Step 4: Simplify right side
    296,714.84x = 38,441,855,358.63
  5. Step 5: Solve for x
    x = 38,441,855,358.63/296,714.84
  6. Step 6: Final answer
    x = 129,558.25

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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.