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Finding the Fourth Proportional to 98,993.61, 136,610.69 and 53,671.41

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Solution

The fourth proportional to 98,993.61, 136,610.69 and 53,671.41 is: 74,066.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,993.61 : 136,610.69 = 53,671.41 : x
  2. Step 2: Convert to fraction form
    98,993.61/136,610.69 = 53,671.41/x
  3. Step 3: Cross multiply
    98,993.61x = 136,610.69 × 53,671.41
  4. Step 4: Simplify right side
    98,993.61x = 7,332,088,085.02
  5. Step 5: Solve for x
    x = 7,332,088,085.02/98,993.61
  6. Step 6: Final answer
    x = 74,066.28

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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.