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Finding the Fourth Proportional to 65,208.46, 97,764.85 and 20,809.63

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Solution

The fourth proportional to 65,208.46, 97,764.85 and 20,809.63 is: 31,199.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,208.46 : 97,764.85 = 20,809.63 : x
  2. Step 2: Convert to fraction form
    65,208.46/97,764.85 = 20,809.63/x
  3. Step 3: Cross multiply
    65,208.46x = 97,764.85 × 20,809.63
  4. Step 4: Simplify right side
    65,208.46x = 2,034,450,355.51
  5. Step 5: Solve for x
    x = 2,034,450,355.51/65,208.46
  6. Step 6: Final answer
    x = 31,199.18

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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.