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Finding the Fourth Proportional to 659,346.60, 988,922.70 and 186,079.80

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Solution

The fourth proportional to 659,346.60, 988,922.70 and 186,079.80 is: 279,092.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,346.60 : 988,922.70 = 186,079.80 : x
  2. Step 2: Convert to fraction form
    659,346.60/988,922.70 = 186,079.80/x
  3. Step 3: Cross multiply
    659,346.60x = 988,922.70 × 186,079.80
  4. Step 4: Simplify right side
    659,346.60x = 184,018,538,231.46
  5. Step 5: Solve for x
    x = 184,018,538,231.46/659,346.60
  6. Step 6: Final answer
    x = 279,092.27

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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.