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Finding the Fourth Proportional to 111,062.70, 153,262.58 and 62,679.88

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Solution

The fourth proportional to 111,062.70, 153,262.58 and 62,679.88 is: 86,496.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,062.70 : 153,262.58 = 62,679.88 : x
  2. Step 2: Convert to fraction form
    111,062.70/153,262.58 = 62,679.88/x
  3. Step 3: Cross multiply
    111,062.70x = 153,262.58 × 62,679.88
  4. Step 4: Simplify right side
    111,062.70x = 9,606,480,122.89
  5. Step 5: Solve for x
    x = 9,606,480,122.89/111,062.70
  6. Step 6: Final answer
    x = 86,496.01

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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.