Home / 209,111.76-288,573.66-113,618.79

Finding the Fourth Proportional to 209,111.76, 288,573.66 and 113,618.79

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Solution

The fourth proportional to 209,111.76, 288,573.66 and 113,618.79 is: 156,793.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,111.76 : 288,573.66 = 113,618.79 : x
  2. Step 2: Convert to fraction form
    209,111.76/288,573.66 = 113,618.79/x
  3. Step 3: Cross multiply
    209,111.76x = 288,573.66 × 113,618.79
  4. Step 4: Simplify right side
    209,111.76x = 32,787,390,075.07
  5. Step 5: Solve for x
    x = 32,787,390,075.07/209,111.76
  6. Step 6: Final answer
    x = 156,793.62

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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.