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Finding the Fourth Proportional to 159,374.58, 219,935.16 and 87,752.76

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Solution

The fourth proportional to 159,374.58, 219,935.16 and 87,752.76 is: 121,097.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,374.58 : 219,935.16 = 87,752.76 : x
  2. Step 2: Convert to fraction form
    159,374.58/219,935.16 = 87,752.76/x
  3. Step 3: Cross multiply
    159,374.58x = 219,935.16 × 87,752.76
  4. Step 4: Simplify right side
    159,374.58x = 19,299,917,311.04
  5. Step 5: Solve for x
    x = 19,299,917,311.04/159,374.58
  6. Step 6: Final answer
    x = 121,097.84

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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.