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Finding the Fourth Proportional to 110,925.81, 153,336.20 and 98,945.03

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Solution

The fourth proportional to 110,925.81, 153,336.20 and 98,945.03 is: 136,774.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,925.81 : 153,336.20 = 98,945.03 : x
  2. Step 2: Convert to fraction form
    110,925.81/153,336.20 = 98,945.03/x
  3. Step 3: Cross multiply
    110,925.81x = 153,336.20 × 98,945.03
  4. Step 4: Simplify right side
    110,925.81x = 15,171,854,389.77
  5. Step 5: Solve for x
    x = 15,171,854,389.77/110,925.81
  6. Step 6: Final answer
    x = 136,774.79

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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.