Home / 209,041.17-288,596.52-137,628.81

Finding the Fourth Proportional to 209,041.17, 288,596.52 and 137,628.81

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Solution

The fourth proportional to 209,041.17, 288,596.52 and 137,628.81 is: 190,006.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,041.17 : 288,596.52 = 137,628.81 : x
  2. Step 2: Convert to fraction form
    209,041.17/288,596.52 = 137,628.81/x
  3. Step 3: Cross multiply
    209,041.17x = 288,596.52 × 137,628.81
  4. Step 4: Simplify right side
    209,041.17x = 39,719,195,617.74
  5. Step 5: Solve for x
    x = 39,719,195,617.74/209,041.17
  6. Step 6: Final answer
    x = 190,006.57

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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.