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Finding the Fourth Proportional to 339,501.79, 509,331.46 and 99,606.00

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Solution

The fourth proportional to 339,501.79, 509,331.46 and 99,606.00 is: 149,432.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,501.79 : 509,331.46 = 99,606.00 : x
  2. Step 2: Convert to fraction form
    339,501.79/509,331.46 = 99,606.00/x
  3. Step 3: Cross multiply
    339,501.79x = 509,331.46 × 99,606.00
  4. Step 4: Simplify right side
    339,501.79x = 50,732,470,832.29
  5. Step 5: Solve for x
    x = 50,732,470,832.29/339,501.79
  6. Step 6: Final answer
    x = 149,432.11

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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.