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Finding the Fourth Proportional to 90,624.36, 125,071.43 and 54,834.11

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Solution

The fourth proportional to 90,624.36, 125,071.43 and 54,834.11 is: 75,677.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,624.36 : 125,071.43 = 54,834.11 : x
  2. Step 2: Convert to fraction form
    90,624.36/125,071.43 = 54,834.11/x
  3. Step 3: Cross multiply
    90,624.36x = 125,071.43 × 54,834.11
  4. Step 4: Simplify right side
    90,624.36x = 6,858,180,550.48
  5. Step 5: Solve for x
    x = 6,858,180,550.48/90,624.36
  6. Step 6: Final answer
    x = 75,677.01

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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.