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Finding the Fourth Proportional to 662,686.40, 994,807.20 and 658,020.80

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Solution

The fourth proportional to 662,686.40, 994,807.20 and 658,020.80 is: 987,803.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,686.40 : 994,807.20 = 658,020.80 : x
  2. Step 2: Convert to fraction form
    662,686.40/994,807.20 = 658,020.80/x
  3. Step 3: Cross multiply
    662,686.40x = 994,807.20 × 658,020.80
  4. Step 4: Simplify right side
    662,686.40x = 654,603,829,589.76
  5. Step 5: Solve for x
    x = 654,603,829,589.76/662,686.40
  6. Step 6: Final answer
    x = 987,803.33

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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.