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Finding the Fourth Proportional to 111,204.16, 153,461.28 and 63,458.08

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Solution

The fourth proportional to 111,204.16, 153,461.28 and 63,458.08 is: 87,571.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,204.16 : 153,461.28 = 63,458.08 : x
  2. Step 2: Convert to fraction form
    111,204.16/153,461.28 = 63,458.08/x
  3. Step 3: Cross multiply
    111,204.16x = 153,461.28 × 63,458.08
  4. Step 4: Simplify right side
    111,204.16x = 9,738,358,183.14
  5. Step 5: Solve for x
    x = 9,738,358,183.14/111,204.16
  6. Step 6: Final answer
    x = 87,571.89

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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.