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Finding the Fourth Proportional to 117,199.79, 175,785.72 and 30,639.95

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Solution

The fourth proportional to 117,199.79, 175,785.72 and 30,639.95 is: 45,956.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,199.79 : 175,785.72 = 30,639.95 : x
  2. Step 2: Convert to fraction form
    117,199.79/175,785.72 = 30,639.95/x
  3. Step 3: Cross multiply
    117,199.79x = 175,785.72 × 30,639.95
  4. Step 4: Simplify right side
    117,199.79x = 5,386,065,671.51
  5. Step 5: Solve for x
    x = 5,386,065,671.51/117,199.79
  6. Step 6: Final answer
    x = 45,956.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.