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Finding the Fourth Proportional to 288,756.39, 433,196.40 and 86,368.38

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Solution

The fourth proportional to 288,756.39, 433,196.40 and 86,368.38 is: 129,571.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,756.39 : 433,196.40 = 86,368.38 : x
  2. Step 2: Convert to fraction form
    288,756.39/433,196.40 = 86,368.38/x
  3. Step 3: Cross multiply
    288,756.39x = 433,196.40 × 86,368.38
  4. Step 4: Simplify right side
    288,756.39x = 37,414,469,989.23
  5. Step 5: Solve for x
    x = 37,414,469,989.23/288,756.39
  6. Step 6: Final answer
    x = 129,571.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.