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Finding the Fourth Proportional to 156,817.81, 216,409.41 and 96,427.90

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Solution

The fourth proportional to 156,817.81, 216,409.41 and 96,427.90 is: 133,071.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,817.81 : 216,409.41 = 96,427.90 : x
  2. Step 2: Convert to fraction form
    156,817.81/216,409.41 = 96,427.90/x
  3. Step 3: Cross multiply
    156,817.81x = 216,409.41 × 96,427.90
  4. Step 4: Simplify right side
    156,817.81x = 20,867,904,946.54
  5. Step 5: Solve for x
    x = 20,867,904,946.54/156,817.81
  6. Step 6: Final answer
    x = 133,071.01

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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.