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Finding the Fourth Proportional to 191,800.70, 287,787.45 and 91,922.30

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Solution

The fourth proportional to 191,800.70, 287,787.45 and 91,922.30 is: 137,924.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,800.70 : 287,787.45 = 91,922.30 : x
  2. Step 2: Convert to fraction form
    191,800.70/287,787.45 = 91,922.30/x
  3. Step 3: Cross multiply
    191,800.70x = 287,787.45 × 91,922.30
  4. Step 4: Simplify right side
    191,800.70x = 26,454,084,315.14
  5. Step 5: Solve for x
    x = 26,454,084,315.14/191,800.70
  6. Step 6: Final answer
    x = 137,924.86

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1.5x scale

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.