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Finding the Fourth Proportional to 83,151.20, 124,573.20 and 77,621.60

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Solution

The fourth proportional to 83,151.20, 124,573.20 and 77,621.60 is: 116,289.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,151.20 : 124,573.20 = 77,621.60 : x
  2. Step 2: Convert to fraction form
    83,151.20/124,573.20 = 77,621.60/x
  3. Step 3: Cross multiply
    83,151.20x = 124,573.20 × 77,621.60
  4. Step 4: Simplify right side
    83,151.20x = 9,669,571,101.12
  5. Step 5: Solve for x
    x = 9,669,571,101.12/83,151.20
  6. Step 6: Final answer
    x = 116,289.01

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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.