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Finding the Fourth Proportional to 111,803.13, 154,294.62 and 64,064.43

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Solution

The fourth proportional to 111,803.13, 154,294.62 and 64,064.43 is: 88,412.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,803.13 : 154,294.62 = 64,064.43 : x
  2. Step 2: Convert to fraction form
    111,803.13/154,294.62 = 64,064.43/x
  3. Step 3: Cross multiply
    111,803.13x = 154,294.62 × 64,064.43
  4. Step 4: Simplify right side
    111,803.13x = 9,884,796,882.37
  5. Step 5: Solve for x
    x = 9,884,796,882.37/111,803.13
  6. Step 6: Final answer
    x = 88,412.52

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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.