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Finding the Fourth Proportional to 65,816.20, 90,826.10 and 35,601.56

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Solution

The fourth proportional to 65,816.20, 90,826.10 and 35,601.56 is: 49,130.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,816.20 : 90,826.10 = 35,601.56 : x
  2. Step 2: Convert to fraction form
    65,816.20/90,826.10 = 35,601.56/x
  3. Step 3: Cross multiply
    65,816.20x = 90,826.10 × 35,601.56
  4. Step 4: Simplify right side
    65,816.20x = 3,233,550,848.72
  5. Step 5: Solve for x
    x = 3,233,550,848.72/65,816.20
  6. Step 6: Final answer
    x = 49,130.01

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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.