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Finding the Fourth Proportional to 191,489.59, 264,250.86 and 105,447.89

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Solution

The fourth proportional to 191,489.59, 264,250.86 and 105,447.89 is: 145,515.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,489.59 : 264,250.86 = 105,447.89 : x
  2. Step 2: Convert to fraction form
    191,489.59/264,250.86 = 105,447.89/x
  3. Step 3: Cross multiply
    191,489.59x = 264,250.86 × 105,447.89
  4. Step 4: Simplify right side
    191,489.59x = 27,864,696,772.60
  5. Step 5: Solve for x
    x = 27,864,696,772.60/191,489.59
  6. Step 6: Final answer
    x = 145,515.46

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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.