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Finding the Fourth Proportional to 114,511.70, 171,767.55 and 84,987.20

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Solution

The fourth proportional to 114,511.70, 171,767.55 and 84,987.20 is: 127,480.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,511.70 : 171,767.55 = 84,987.20 : x
  2. Step 2: Convert to fraction form
    114,511.70/171,767.55 = 84,987.20/x
  3. Step 3: Cross multiply
    114,511.70x = 171,767.55 × 84,987.20
  4. Step 4: Simplify right side
    114,511.70x = 14,598,043,125.36
  5. Step 5: Solve for x
    x = 14,598,043,125.36/114,511.70
  6. Step 6: Final answer
    x = 127,480.80

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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.