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Finding the Fourth Proportional to 106,159.76, 159,267 and 76,208.72

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Solution

The fourth proportional to 106,159.76, 159,267 and 76,208.72 is: 114,332.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,159.76 : 159,267 = 76,208.72 : x
  2. Step 2: Convert to fraction form
    106,159.76/159,267 = 76,208.72/x
  3. Step 3: Cross multiply
    106,159.76x = 159,267 × 76,208.72
  4. Step 4: Simplify right side
    106,159.76x = 12,137,534,208.24
  5. Step 5: Solve for x
    x = 12,137,534,208.24/106,159.76
  6. Step 6: Final answer
    x = 114,332.72

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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.