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Finding the Fourth Proportional to 104,665.65, 144,364.30 and 64,326.43

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Solution

The fourth proportional to 104,665.65, 144,364.30 and 64,326.43 is: 88,724.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,665.65 : 144,364.30 = 64,326.43 : x
  2. Step 2: Convert to fraction form
    104,665.65/144,364.30 = 64,326.43/x
  3. Step 3: Cross multiply
    104,665.65x = 144,364.30 × 64,326.43
  4. Step 4: Simplify right side
    104,665.65x = 9,286,440,038.45
  5. Step 5: Solve for x
    x = 9,286,440,038.45/104,665.65
  6. Step 6: Final answer
    x = 88,724.81

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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.