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Finding the Fourth Proportional to 163,619.70, 245,429.55 and 124,253.70

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Solution

The fourth proportional to 163,619.70, 245,429.55 and 124,253.70 is: 186,380.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,619.70 : 245,429.55 = 124,253.70 : x
  2. Step 2: Convert to fraction form
    163,619.70/245,429.55 = 124,253.70/x
  3. Step 3: Cross multiply
    163,619.70x = 245,429.55 × 124,253.70
  4. Step 4: Simplify right side
    163,619.70x = 30,495,529,676.84
  5. Step 5: Solve for x
    x = 30,495,529,676.84/163,619.70
  6. Step 6: Final answer
    x = 186,380.55

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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.