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Finding the Fourth Proportional to 659,883.60, 989,728.20 and 186,616.80

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Solution

The fourth proportional to 659,883.60, 989,728.20 and 186,616.80 is: 279,897.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,883.60 : 989,728.20 = 186,616.80 : x
  2. Step 2: Convert to fraction form
    659,883.60/989,728.20 = 186,616.80/x
  3. Step 3: Cross multiply
    659,883.60x = 989,728.20 × 186,616.80
  4. Step 4: Simplify right side
    659,883.60x = 184,699,909,553.76
  5. Step 5: Solve for x
    x = 184,699,909,553.76/659,883.60
  6. Step 6: Final answer
    x = 279,897.71

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1.5x scale

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.