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Finding the Fourth Proportional to 65,309.80, 89,998.50 and 46,393.96

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Solution

The fourth proportional to 65,309.80, 89,998.50 and 46,393.96 is: 63,932.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,309.80 : 89,998.50 = 46,393.96 : x
  2. Step 2: Convert to fraction form
    65,309.80/89,998.50 = 46,393.96/x
  3. Step 3: Cross multiply
    65,309.80x = 89,998.50 × 46,393.96
  4. Step 4: Simplify right side
    65,309.80x = 4,175,386,809.06
  5. Step 5: Solve for x
    x = 4,175,386,809.06/65,309.80
  6. Step 6: Final answer
    x = 63,932.01

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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.