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Finding the Fourth Proportional to 659,778.56, 989,703.68 and 186,501.12

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Solution

The fourth proportional to 659,778.56, 989,703.68 and 186,501.12 is: 279,761.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,778.56 : 989,703.68 = 186,501.12 : x
  2. Step 2: Convert to fraction form
    659,778.56/989,703.68 = 186,501.12/x
  3. Step 3: Cross multiply
    659,778.56x = 989,703.68 × 186,501.12
  4. Step 4: Simplify right side
    659,778.56x = 184,580,844,788.12
  5. Step 5: Solve for x
    x = 184,580,844,788.12/659,778.56
  6. Step 6: Final answer
    x = 279,761.81

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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.