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Finding the Fourth Proportional to 657,205.80, 983,621.70 and 476,778.30

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Solution

The fourth proportional to 657,205.80, 983,621.70 and 476,778.30 is: 713,580.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,205.80 : 983,621.70 = 476,778.30 : x
  2. Step 2: Convert to fraction form
    657,205.80/983,621.70 = 476,778.30/x
  3. Step 3: Cross multiply
    657,205.80x = 983,621.70 × 476,778.30
  4. Step 4: Simplify right side
    657,205.80x = 468,969,481,969.11
  5. Step 5: Solve for x
    x = 468,969,481,969.11/657,205.80
  6. Step 6: Final answer
    x = 713,580.86

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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.