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Finding the Fourth Proportional to 156,618.81, 216,035.64 and 92,911.50

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Solution

The fourth proportional to 156,618.81, 216,035.64 and 92,911.50 is: 128,159.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,618.81 : 216,035.64 = 92,911.50 : x
  2. Step 2: Convert to fraction form
    156,618.81/216,035.64 = 92,911.50/x
  3. Step 3: Cross multiply
    156,618.81x = 216,035.64 × 92,911.50
  4. Step 4: Simplify right side
    156,618.81x = 20,072,195,365.86
  5. Step 5: Solve for x
    x = 20,072,195,365.86/156,618.81
  6. Step 6: Final answer
    x = 128,159.54

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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.