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Finding the Fourth Proportional to 84,821.90, 127,232.85 and 83,266.70

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Solution

The fourth proportional to 84,821.90, 127,232.85 and 83,266.70 is: 124,900.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,821.90 : 127,232.85 = 83,266.70 : x
  2. Step 2: Convert to fraction form
    84,821.90/127,232.85 = 83,266.70/x
  3. Step 3: Cross multiply
    84,821.90x = 127,232.85 × 83,266.70
  4. Step 4: Simplify right side
    84,821.90x = 10,594,259,551.10
  5. Step 5: Solve for x
    x = 10,594,259,551.10/84,821.90
  6. Step 6: Final answer
    x = 124,900.05

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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.