Home / 209,328.80-288,772.18-124,385.72

Finding the Fourth Proportional to 209,328.80, 288,772.18 and 124,385.72

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Solution

The fourth proportional to 209,328.80, 288,772.18 and 124,385.72 is: 171,591.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,328.80 : 288,772.18 = 124,385.72 : x
  2. Step 2: Convert to fraction form
    209,328.80/288,772.18 = 124,385.72/x
  3. Step 3: Cross multiply
    209,328.80x = 288,772.18 × 124,385.72
  4. Step 4: Simplify right side
    209,328.80x = 35,919,135,525.27
  5. Step 5: Solve for x
    x = 35,919,135,525.27/209,328.80
  6. Step 6: Final answer
    x = 171,591.94

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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.