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Finding the Fourth Proportional to 547,631.76, 755,416.44 and 329,688.84

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Solution

The fourth proportional to 547,631.76, 755,416.44 and 329,688.84 is: 454,780.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,631.76 : 755,416.44 = 329,688.84 : x
  2. Step 2: Convert to fraction form
    547,631.76/755,416.44 = 329,688.84/x
  3. Step 3: Cross multiply
    547,631.76x = 755,416.44 × 329,688.84
  4. Step 4: Simplify right side
    547,631.76x = 249,052,369,820.53
  5. Step 5: Solve for x
    x = 249,052,369,820.53/547,631.76
  6. Step 6: Final answer
    x = 454,780.73

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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.