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Finding the Fourth Proportional to 90,291.56, 124,563.02 and 54,461.66

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Solution

The fourth proportional to 90,291.56, 124,563.02 and 54,461.66 is: 75,133.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,291.56 : 124,563.02 = 54,461.66 : x
  2. Step 2: Convert to fraction form
    90,291.56/124,563.02 = 54,461.66/x
  3. Step 3: Cross multiply
    90,291.56x = 124,563.02 × 54,461.66
  4. Step 4: Simplify right side
    90,291.56x = 6,783,908,843.81
  5. Step 5: Solve for x
    x = 6,783,908,843.81/90,291.56
  6. Step 6: Final answer
    x = 75,133.37

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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.