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Finding the Fourth Proportional to 170,856.87, 235,742.58 and 99,193.74

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Solution

The fourth proportional to 170,856.87, 235,742.58 and 99,193.74 is: 136,864.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,856.87 : 235,742.58 = 99,193.74 : x
  2. Step 2: Convert to fraction form
    170,856.87/235,742.58 = 99,193.74/x
  3. Step 3: Cross multiply
    170,856.87x = 235,742.58 × 99,193.74
  4. Step 4: Simplify right side
    170,856.87x = 23,384,188,187.45
  5. Step 5: Solve for x
    x = 23,384,188,187.45/170,856.87
  6. Step 6: Final answer
    x = 136,864.20

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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.