Home / 209,113.31-288,572.21-113,620.69

Finding the Fourth Proportional to 209,113.31, 288,572.21 and 113,620.69

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Solution

The fourth proportional to 209,113.31, 288,572.21 and 113,620.69 is: 156,794.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,113.31 : 288,572.21 = 113,620.69 : x
  2. Step 2: Convert to fraction form
    209,113.31/288,572.21 = 113,620.69/x
  3. Step 3: Cross multiply
    209,113.31x = 288,572.21 × 113,620.69
  4. Step 4: Simplify right side
    209,113.31x = 32,787,773,615.02
  5. Step 5: Solve for x
    x = 32,787,773,615.02/209,113.31
  6. Step 6: Final answer
    x = 156,794.29

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1.5x scale

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.