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Finding the Fourth Proportional to 664,385.80, 928,040.60 and 664,385.80

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Solution

The fourth proportional to 664,385.80, 928,040.60 and 664,385.80 is: 928,040.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,385.80 : 928,040.60 = 664,385.80 : x
  2. Step 2: Convert to fraction form
    664,385.80/928,040.60 = 664,385.80/x
  3. Step 3: Cross multiply
    664,385.80x = 928,040.60 × 664,385.80
  4. Step 4: Simplify right side
    664,385.80x = 616,576,996,463.48
  5. Step 5: Solve for x
    x = 616,576,996,463.48/664,385.80
  6. Step 6: Final answer
    x = 928,040.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.