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Finding the Fourth Proportional to 92,962.54, 128,289.18 and 55,229.50

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Solution

The fourth proportional to 92,962.54, 128,289.18 and 55,229.50 is: 76,217.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,962.54 : 128,289.18 = 55,229.50 : x
  2. Step 2: Convert to fraction form
    92,962.54/128,289.18 = 55,229.50/x
  3. Step 3: Cross multiply
    92,962.54x = 128,289.18 × 55,229.50
  4. Step 4: Simplify right side
    92,962.54x = 7,085,347,266.81
  5. Step 5: Solve for x
    x = 7,085,347,266.81/92,962.54
  6. Step 6: Final answer
    x = 76,217.23

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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.