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Finding the Fourth Proportional to 986,512.10, 1,479,658.80 and 276,611.90

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Solution

The fourth proportional to 986,512.10, 1,479,658.80 and 276,611.90 is: 414,887.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,512.10 : 1,479,658.80 = 276,611.90 : x
  2. Step 2: Convert to fraction form
    986,512.10/1,479,658.80 = 276,611.90/x
  3. Step 3: Cross multiply
    986,512.10x = 1,479,658.80 × 276,611.90
  4. Step 4: Simplify right side
    986,512.10x = 409,291,232,019.72
  5. Step 5: Solve for x
    x = 409,291,232,019.72/986,512.10
  6. Step 6: Final answer
    x = 414,887.19

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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.