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Finding the Fourth Proportional to 285,030.66, 393,170.95 and 188,235.41

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Solution

The fourth proportional to 285,030.66, 393,170.95 and 188,235.41 is: 259,651.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,030.66 : 393,170.95 = 188,235.41 : x
  2. Step 2: Convert to fraction form
    285,030.66/393,170.95 = 188,235.41/x
  3. Step 3: Cross multiply
    285,030.66x = 393,170.95 × 188,235.41
  4. Step 4: Simplify right side
    285,030.66x = 74,008,694,973.34
  5. Step 5: Solve for x
    x = 74,008,694,973.34/285,030.66
  6. Step 6: Final answer
    x = 259,651.70

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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.