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Finding the Fourth Proportional to 111,177.64, 153,665.13 and 98,339.95

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Solution

The fourth proportional to 111,177.64, 153,665.13 and 98,339.95 is: 135,921.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,177.64 : 153,665.13 = 98,339.95 : x
  2. Step 2: Convert to fraction form
    111,177.64/153,665.13 = 98,339.95/x
  3. Step 3: Cross multiply
    111,177.64x = 153,665.13 × 98,339.95
  4. Step 4: Simplify right side
    111,177.64x = 15,111,421,200.94
  5. Step 5: Solve for x
    x = 15,111,421,200.94/111,177.64
  6. Step 6: Final answer
    x = 135,921.41

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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.