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Finding the Fourth Proportional to 312,593.11, 468,840.57 and 99,332.94

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Solution

The fourth proportional to 312,593.11, 468,840.57 and 99,332.94 is: 148,983.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,593.11 : 468,840.57 = 99,332.94 : x
  2. Step 2: Convert to fraction form
    312,593.11/468,840.57 = 99,332.94/x
  3. Step 3: Cross multiply
    312,593.11x = 468,840.57 × 99,332.94
  4. Step 4: Simplify right side
    312,593.11x = 46,571,312,209.38
  5. Step 5: Solve for x
    x = 46,571,312,209.38/312,593.11
  6. Step 6: Final answer
    x = 148,983.81

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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.