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Finding the Fourth Proportional to 65,555.70, 90,461.49 and 37,254.90

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Solution

The fourth proportional to 65,555.70, 90,461.49 and 37,254.90 is: 51,408.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,555.70 : 90,461.49 = 37,254.90 : x
  2. Step 2: Convert to fraction form
    65,555.70/90,461.49 = 37,254.90/x
  3. Step 3: Cross multiply
    65,555.70x = 90,461.49 × 37,254.90
  4. Step 4: Simplify right side
    65,555.70x = 3,370,133,763.80
  5. Step 5: Solve for x
    x = 3,370,133,763.80/65,555.70
  6. Step 6: Final answer
    x = 51,408.71

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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.