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Finding the Fourth Proportional to 156,630.81, 216,052.20 and 92,923.50

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Solution

The fourth proportional to 156,630.81, 216,052.20 and 92,923.50 is: 128,176.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,630.81 : 216,052.20 = 92,923.50 : x
  2. Step 2: Convert to fraction form
    156,630.81/216,052.20 = 92,923.50/x
  3. Step 3: Cross multiply
    156,630.81x = 216,052.20 × 92,923.50
  4. Step 4: Simplify right side
    156,630.81x = 20,076,326,606.70
  5. Step 5: Solve for x
    x = 20,076,326,606.70/156,630.81
  6. Step 6: Final answer
    x = 128,176.10

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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.