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Finding the Fourth Proportional to 111,498.64, 153,865.93 and 63,099.67

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Solution

The fourth proportional to 111,498.64, 153,865.93 and 63,099.67 is: 87,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,498.64 : 153,865.93 = 63,099.67 : x
  2. Step 2: Convert to fraction form
    111,498.64/153,865.93 = 63,099.67/x
  3. Step 3: Cross multiply
    111,498.64x = 153,865.93 × 63,099.67
  4. Step 4: Simplify right side
    111,498.64x = 9,708,889,407.24
  5. Step 5: Solve for x
    x = 9,708,889,407.24/111,498.64
  6. Step 6: Final answer
    x = 87,076.30

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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.