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Finding the Fourth Proportional to 64,409.80, 96,623.48 and 22,278.58

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Solution

The fourth proportional to 64,409.80, 96,623.48 and 22,278.58 is: 33,420.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,409.80 : 96,623.48 = 22,278.58 : x
  2. Step 2: Convert to fraction form
    64,409.80/96,623.48 = 22,278.58/x
  3. Step 3: Cross multiply
    64,409.80x = 96,623.48 × 22,278.58
  4. Step 4: Simplify right side
    64,409.80x = 2,152,633,929.06
  5. Step 5: Solve for x
    x = 2,152,633,929.06/64,409.80
  6. Step 6: Final answer
    x = 33,420.91

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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.