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Finding the Fourth Proportional to 296,989.76, 445,287.85 and 107,425.18

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Solution

The fourth proportional to 296,989.76, 445,287.85 and 107,425.18 is: 161,066.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,989.76 : 445,287.85 = 107,425.18 : x
  2. Step 2: Convert to fraction form
    296,989.76/445,287.85 = 107,425.18/x
  3. Step 3: Cross multiply
    296,989.76x = 445,287.85 × 107,425.18
  4. Step 4: Simplify right side
    296,989.76x = 47,835,124,674.50
  5. Step 5: Solve for x
    x = 47,835,124,674.50/296,989.76
  6. Step 6: Final answer
    x = 161,066.58

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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.