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Finding the Fourth Proportional to 95,858.10, 143,787.15 and 60,428.70

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Solution

The fourth proportional to 95,858.10, 143,787.15 and 60,428.70 is: 90,643.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,858.10 : 143,787.15 = 60,428.70 : x
  2. Step 2: Convert to fraction form
    95,858.10/143,787.15 = 60,428.70/x
  3. Step 3: Cross multiply
    95,858.10x = 143,787.15 × 60,428.70
  4. Step 4: Simplify right side
    95,858.10x = 8,688,870,551.21
  5. Step 5: Solve for x
    x = 8,688,870,551.21/95,858.10
  6. Step 6: Final answer
    x = 90,643.05

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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.