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Finding the Fourth Proportional to 90,944.94, 125,507.88 and 50,658.72

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Solution

The fourth proportional to 90,944.94, 125,507.88 and 50,658.72 is: 69,911.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,944.94 : 125,507.88 = 50,658.72 : x
  2. Step 2: Convert to fraction form
    90,944.94/125,507.88 = 50,658.72/x
  3. Step 3: Cross multiply
    90,944.94x = 125,507.88 × 50,658.72
  4. Step 4: Simplify right side
    90,944.94x = 6,358,068,080.06
  5. Step 5: Solve for x
    x = 6,358,068,080.06/90,944.94
  6. Step 6: Final answer
    x = 69,911.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.