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Finding the Fourth Proportional to 661,321.77, 991,195.11 and 460,555.17

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Solution

The fourth proportional to 661,321.77, 991,195.11 and 460,555.17 is: 690,284.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,321.77 : 991,195.11 = 460,555.17 : x
  2. Step 2: Convert to fraction form
    661,321.77/991,195.11 = 460,555.17/x
  3. Step 3: Cross multiply
    661,321.77x = 991,195.11 × 460,555.17
  4. Step 4: Simplify right side
    661,321.77x = 456,500,032,389.22
  5. Step 5: Solve for x
    x = 456,500,032,389.22/661,321.77
  6. Step 6: Final answer
    x = 690,284.30

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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.