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Finding the Fourth Proportional to 89,772.99, 123,886.69 and 49,487.41

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Solution

The fourth proportional to 89,772.99, 123,886.69 and 49,487.41 is: 68,292.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,772.99 : 123,886.69 = 49,487.41 : x
  2. Step 2: Convert to fraction form
    89,772.99/123,886.69 = 49,487.41/x
  3. Step 3: Cross multiply
    89,772.99x = 123,886.69 × 49,487.41
  4. Step 4: Simplify right side
    89,772.99x = 6,130,831,421.57
  5. Step 5: Solve for x
    x = 6,130,831,421.57/89,772.99
  6. Step 6: Final answer
    x = 68,292.61

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1.5x scale

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.