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Finding the Fourth Proportional to 111,644.65, 154,060.67 and 63,887.05

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Solution

The fourth proportional to 111,644.65, 154,060.67 and 63,887.05 is: 88,159.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,644.65 : 154,060.67 = 63,887.05 : x
  2. Step 2: Convert to fraction form
    111,644.65/154,060.67 = 63,887.05/x
  3. Step 3: Cross multiply
    111,644.65x = 154,060.67 × 63,887.05
  4. Step 4: Simplify right side
    111,644.65x = 9,842,480,957.02
  5. Step 5: Solve for x
    x = 9,842,480,957.02/111,644.65
  6. Step 6: Final answer
    x = 88,159.01

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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.