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Finding the Fourth Proportional to 153,481.65, 211,796.46 and 84,568.98

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Solution

The fourth proportional to 153,481.65, 211,796.46 and 84,568.98 is: 116,700.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,481.65 : 211,796.46 = 84,568.98 : x
  2. Step 2: Convert to fraction form
    153,481.65/211,796.46 = 84,568.98/x
  3. Step 3: Cross multiply
    153,481.65x = 211,796.46 × 84,568.98
  4. Step 4: Simplify right side
    153,481.65x = 17,911,409,530.83
  5. Step 5: Solve for x
    x = 17,911,409,530.83/153,481.65
  6. Step 6: Final answer
    x = 116,700.66

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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.