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Finding the Fourth Proportional to 86,607, 119,517.66 and 53,073

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Solution

The fourth proportional to 86,607, 119,517.66 and 53,073 is: 73,240.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,607 : 119,517.66 = 53,073 : x
  2. Step 2: Convert to fraction form
    86,607/119,517.66 = 53,073/x
  3. Step 3: Cross multiply
    86,607x = 119,517.66 × 53,073
  4. Step 4: Simplify right side
    86,607x = 6,343,160,769.18
  5. Step 5: Solve for x
    x = 6,343,160,769.18/86,607
  6. Step 6: Final answer
    x = 73,240.74

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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.