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Finding the Fourth Proportional to 288,573.95, 398,115.60 and 191,824.58

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Solution

The fourth proportional to 288,573.95, 398,115.60 and 191,824.58 is: 264,640.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,573.95 : 398,115.60 = 191,824.58 : x
  2. Step 2: Convert to fraction form
    288,573.95/398,115.60 = 191,824.58/x
  3. Step 3: Cross multiply
    288,573.95x = 398,115.60 × 191,824.58
  4. Step 4: Simplify right side
    288,573.95x = 76,368,357,761.45
  5. Step 5: Solve for x
    x = 76,368,357,761.45/288,573.95
  6. Step 6: Final answer
    x = 264,640.51

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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.