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Finding the Fourth Proportional to 364,932.84, 547,428.54 and 128,328.60

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Solution

The fourth proportional to 364,932.84, 547,428.54 and 128,328.60 is: 192,503.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,932.84 : 547,428.54 = 128,328.60 : x
  2. Step 2: Convert to fraction form
    364,932.84/547,428.54 = 128,328.60/x
  3. Step 3: Cross multiply
    364,932.84x = 547,428.54 × 128,328.60
  4. Step 4: Simplify right side
    364,932.84x = 70,250,738,138.24
  5. Step 5: Solve for x
    x = 70,250,738,138.24/364,932.84
  6. Step 6: Final answer
    x = 192,503.20

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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.