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Finding the Fourth Proportional to 153,983.75, 212,491.59 and 96,653.87

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Solution

The fourth proportional to 153,983.75, 212,491.59 and 96,653.87 is: 133,378.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,983.75 : 212,491.59 = 96,653.87 : x
  2. Step 2: Convert to fraction form
    153,983.75/212,491.59 = 96,653.87/x
  3. Step 3: Cross multiply
    153,983.75x = 212,491.59 × 96,653.87
  4. Step 4: Simplify right side
    153,983.75x = 20,538,135,288.82
  5. Step 5: Solve for x
    x = 20,538,135,288.82/153,983.75
  6. Step 6: Final answer
    x = 133,378.59

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1.5x scale

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.