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Finding the Fourth Proportional to 86,189.94, 118,905.57 and 52,636.50

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Solution

The fourth proportional to 86,189.94, 118,905.57 and 52,636.50 is: 72,616.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,189.94 : 118,905.57 = 52,636.50 : x
  2. Step 2: Convert to fraction form
    86,189.94/118,905.57 = 52,636.50/x
  3. Step 3: Cross multiply
    86,189.94x = 118,905.57 × 52,636.50
  4. Step 4: Simplify right side
    86,189.94x = 6,258,773,035.31
  5. Step 5: Solve for x
    x = 6,258,773,035.31/86,189.94
  6. Step 6: Final answer
    x = 72,616.05

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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.