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Finding the Fourth Proportional to 113,661.36, 156,845.88 and 62,671.68

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Solution

The fourth proportional to 113,661.36, 156,845.88 and 62,671.68 is: 86,483.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,661.36 : 156,845.88 = 62,671.68 : x
  2. Step 2: Convert to fraction form
    113,661.36/156,845.88 = 62,671.68/x
  3. Step 3: Cross multiply
    113,661.36x = 156,845.88 × 62,671.68
  4. Step 4: Simplify right side
    113,661.36x = 9,829,794,800.68
  5. Step 5: Solve for x
    x = 9,829,794,800.68/113,661.36
  6. Step 6: Final answer
    x = 86,483.17

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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.