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Finding the Fourth Proportional to 354,539.19, 531,964.87 and 186,018.88

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Solution

The fourth proportional to 354,539.19, 531,964.87 and 186,018.88 is: 279,110.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,539.19 : 531,964.87 = 186,018.88 : x
  2. Step 2: Convert to fraction form
    354,539.19/531,964.87 = 186,018.88/x
  3. Step 3: Cross multiply
    354,539.19x = 531,964.87 × 186,018.88
  4. Step 4: Simplify right side
    354,539.19x = 98,955,509,565.58
  5. Step 5: Solve for x
    x = 98,955,509,565.58/354,539.19
  6. Step 6: Final answer
    x = 279,110.22

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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.