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Finding the Fourth Proportional to 114,643.45, 171,809.65 and 64,698.85

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Solution

The fourth proportional to 114,643.45, 171,809.65 and 64,698.85 is: 96,960.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,643.45 : 171,809.65 = 64,698.85 : x
  2. Step 2: Convert to fraction form
    114,643.45/171,809.65 = 64,698.85/x
  3. Step 3: Cross multiply
    114,643.45x = 171,809.65 × 64,698.85
  4. Step 4: Simplify right side
    114,643.45x = 11,115,886,773.90
  5. Step 5: Solve for x
    x = 11,115,886,773.90/114,643.45
  6. Step 6: Final answer
    x = 96,960.50

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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.