Home / 209,072.68-288,373.36-128,544.52

Finding the Fourth Proportional to 209,072.68, 288,373.36 and 128,544.52

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Solution

The fourth proportional to 209,072.68, 288,373.36 and 128,544.52 is: 177,301.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,072.68 : 288,373.36 = 128,544.52 : x
  2. Step 2: Convert to fraction form
    209,072.68/288,373.36 = 128,544.52/x
  3. Step 3: Cross multiply
    209,072.68x = 288,373.36 × 128,544.52
  4. Step 4: Simplify right side
    209,072.68x = 37,068,815,141.99
  5. Step 5: Solve for x
    x = 37,068,815,141.99/209,072.68
  6. Step 6: Final answer
    x = 177,301.10

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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.