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Finding the Fourth Proportional to 657,019.80, 985,529.70 and 445,512.60

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Solution

The fourth proportional to 657,019.80, 985,529.70 and 445,512.60 is: 668,268.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,019.80 : 985,529.70 = 445,512.60 : x
  2. Step 2: Convert to fraction form
    657,019.80/985,529.70 = 445,512.60/x
  3. Step 3: Cross multiply
    657,019.80x = 985,529.70 × 445,512.60
  4. Step 4: Simplify right side
    657,019.80x = 439,065,899,024.22
  5. Step 5: Solve for x
    x = 439,065,899,024.22/657,019.80
  6. Step 6: Final answer
    x = 668,268.90

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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.