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Finding the Fourth Proportional to 887,173.60, 1,330,954.80 and 354,560.80

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Solution

The fourth proportional to 887,173.60, 1,330,954.80 and 354,560.80 is: 531,918.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,173.60 : 1,330,954.80 = 354,560.80 : x
  2. Step 2: Convert to fraction form
    887,173.60/1,330,954.80 = 354,560.80/x
  3. Step 3: Cross multiply
    887,173.60x = 1,330,954.80 × 354,560.80
  4. Step 4: Simplify right side
    887,173.60x = 471,904,398,651.84
  5. Step 5: Solve for x
    x = 471,904,398,651.84/887,173.60
  6. Step 6: Final answer
    x = 531,918.89

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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.