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Finding the Fourth Proportional to 156,732.94, 216,346.65 and 93,070.30

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Solution

The fourth proportional to 156,732.94, 216,346.65 and 93,070.30 is: 128,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,732.94 : 216,346.65 = 93,070.30 : x
  2. Step 2: Convert to fraction form
    156,732.94/216,346.65 = 93,070.30/x
  3. Step 3: Cross multiply
    156,732.94x = 216,346.65 × 93,070.30
  4. Step 4: Simplify right side
    156,732.94x = 20,135,447,619.50
  5. Step 5: Solve for x
    x = 20,135,447,619.50/156,732.94
  6. Step 6: Final answer
    x = 128,469.79

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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.