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Finding the Fourth Proportional to 365,940.64, 548,535.12 and 141,240.16

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Solution

The fourth proportional to 365,940.64, 548,535.12 and 141,240.16 is: 211,715.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,940.64 : 548,535.12 = 141,240.16 : x
  2. Step 2: Convert to fraction form
    365,940.64/548,535.12 = 141,240.16/x
  3. Step 3: Cross multiply
    365,940.64x = 548,535.12 × 141,240.16
  4. Step 4: Simplify right side
    365,940.64x = 77,475,188,114.42
  5. Step 5: Solve for x
    x = 77,475,188,114.42/365,940.64
  6. Step 6: Final answer
    x = 211,715.18

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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.