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Finding the Fourth Proportional to 468,428.80, 702,643.20 and 131,468.80

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Solution

The fourth proportional to 468,428.80, 702,643.20 and 131,468.80 is: 197,203.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,428.80 : 702,643.20 = 131,468.80 : x
  2. Step 2: Convert to fraction form
    468,428.80/702,643.20 = 131,468.80/x
  3. Step 3: Cross multiply
    468,428.80x = 702,643.20 × 131,468.80
  4. Step 4: Simplify right side
    468,428.80x = 92,375,658,332.16
  5. Step 5: Solve for x
    x = 92,375,658,332.16/468,428.80
  6. Step 6: Final answer
    x = 197,203.20

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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.