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Finding the Fourth Proportional to 328,384.70, 492,577.05 and 118,043.90

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Solution

The fourth proportional to 328,384.70, 492,577.05 and 118,043.90 is: 177,065.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,384.70 : 492,577.05 = 118,043.90 : x
  2. Step 2: Convert to fraction form
    328,384.70/492,577.05 = 118,043.90/x
  3. Step 3: Cross multiply
    328,384.70x = 492,577.05 × 118,043.90
  4. Step 4: Simplify right side
    328,384.70x = 58,145,716,032.50
  5. Step 5: Solve for x
    x = 58,145,716,032.50/328,384.70
  6. Step 6: Final answer
    x = 177,065.85

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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.