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Finding the Fourth Proportional to 116,411.60, 160,667.28 and 68,676.64

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Solution

The fourth proportional to 116,411.60, 160,667.28 and 68,676.64 is: 94,785.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,411.60 : 160,667.28 = 68,676.64 : x
  2. Step 2: Convert to fraction form
    116,411.60/160,667.28 = 68,676.64/x
  3. Step 3: Cross multiply
    116,411.60x = 160,667.28 × 68,676.64
  4. Step 4: Simplify right side
    116,411.60x = 11,034,088,948.34
  5. Step 5: Solve for x
    x = 11,034,088,948.34/116,411.60
  6. Step 6: Final answer
    x = 94,785.13

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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.