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Finding the Fourth Proportional to 65,211.99, 97,809.81 and 20,835.06

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Solution

The fourth proportional to 65,211.99, 97,809.81 and 20,835.06 is: 31,249.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,211.99 : 97,809.81 = 20,835.06 : x
  2. Step 2: Convert to fraction form
    65,211.99/97,809.81 = 20,835.06/x
  3. Step 3: Cross multiply
    65,211.99x = 97,809.81 × 20,835.06
  4. Step 4: Simplify right side
    65,211.99x = 2,037,873,259.94
  5. Step 5: Solve for x
    x = 2,037,873,259.94/65,211.99
  6. Step 6: Final answer
    x = 31,249.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.