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Finding the Fourth Proportional to 661,665.40, 992,498.10 and 603,604.60

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Solution

The fourth proportional to 661,665.40, 992,498.10 and 603,604.60 is: 905,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,665.40 : 992,498.10 = 603,604.60 : x
  2. Step 2: Convert to fraction form
    661,665.40/992,498.10 = 603,604.60/x
  3. Step 3: Cross multiply
    661,665.40x = 992,498.10 × 603,604.60
  4. Step 4: Simplify right side
    661,665.40x = 599,076,418,651.26
  5. Step 5: Solve for x
    x = 599,076,418,651.26/661,665.40
  6. Step 6: Final answer
    x = 905,406.90

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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.