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Finding the Fourth Proportional to 116,530.68, 160,970.63 and 91,354.89

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Solution

The fourth proportional to 116,530.68, 160,970.63 and 91,354.89 is: 126,193.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,530.68 : 160,970.63 = 91,354.89 : x
  2. Step 2: Convert to fraction form
    116,530.68/160,970.63 = 91,354.89/x
  3. Step 3: Cross multiply
    116,530.68x = 160,970.63 × 91,354.89
  4. Step 4: Simplify right side
    116,530.68x = 14,705,454,109.86
  5. Step 5: Solve for x
    x = 14,705,454,109.86/116,530.68
  6. Step 6: Final answer
    x = 126,193.85

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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.