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Finding the Fourth Proportional to 266,117.20, 398,851.80 and 116,040.40

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Solution

The fourth proportional to 266,117.20, 398,851.80 and 116,040.40 is: 173,919.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,117.20 : 398,851.80 = 116,040.40 : x
  2. Step 2: Convert to fraction form
    266,117.20/398,851.80 = 116,040.40/x
  3. Step 3: Cross multiply
    266,117.20x = 398,851.80 × 116,040.40
  4. Step 4: Simplify right side
    266,117.20x = 46,282,922,412.72
  5. Step 5: Solve for x
    x = 46,282,922,412.72/266,117.20
  6. Step 6: Final answer
    x = 173,919.32

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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.