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Finding the Fourth Proportional to 118,497.98, 163,429.79 and 84,495.60

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Solution

The fourth proportional to 118,497.98, 163,429.79 and 84,495.60 is: 116,534.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,497.98 : 163,429.79 = 84,495.60 : x
  2. Step 2: Convert to fraction form
    118,497.98/163,429.79 = 84,495.60/x
  3. Step 3: Cross multiply
    118,497.98x = 163,429.79 × 84,495.60
  4. Step 4: Simplify right side
    118,497.98x = 13,809,097,741.45
  5. Step 5: Solve for x
    x = 13,809,097,741.45/118,497.98
  6. Step 6: Final answer
    x = 116,534.45

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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.