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Finding the Fourth Proportional to 664,713.40, 995,903.70 and 545,740.60

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Solution

The fourth proportional to 664,713.40, 995,903.70 and 545,740.60 is: 817,653.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,713.40 : 995,903.70 = 545,740.60 : x
  2. Step 2: Convert to fraction form
    664,713.40/995,903.70 = 545,740.60/x
  3. Step 3: Cross multiply
    664,713.40x = 995,903.70 × 545,740.60
  4. Step 4: Simplify right side
    664,713.40x = 543,505,082,780.22
  5. Step 5: Solve for x
    x = 543,505,082,780.22/664,713.40
  6. Step 6: Final answer
    x = 817,653.27

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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.