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Finding the Fourth Proportional to 114,703.20, 158,262.72 and 66,929.28

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Solution

The fourth proportional to 114,703.20, 158,262.72 and 66,929.28 is: 92,346.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,703.20 : 158,262.72 = 66,929.28 : x
  2. Step 2: Convert to fraction form
    114,703.20/158,262.72 = 66,929.28/x
  3. Step 3: Cross multiply
    114,703.20x = 158,262.72 × 66,929.28
  4. Step 4: Simplify right side
    114,703.20x = 10,592,409,900.44
  5. Step 5: Solve for x
    x = 10,592,409,900.44/114,703.20
  6. Step 6: Final answer
    x = 92,346.25

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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.