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Finding the Fourth Proportional to 112,884.84, 155,787.84 and 64,501.92

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Solution

The fourth proportional to 112,884.84, 155,787.84 and 64,501.92 is: 89,016.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,884.84 : 155,787.84 = 64,501.92 : x
  2. Step 2: Convert to fraction form
    112,884.84/155,787.84 = 64,501.92/x
  3. Step 3: Cross multiply
    112,884.84x = 155,787.84 × 64,501.92
  4. Step 4: Simplify right side
    112,884.84x = 10,048,614,792.65
  5. Step 5: Solve for x
    x = 10,048,614,792.65/112,884.84
  6. Step 6: Final answer
    x = 89,016.51

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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.