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Finding the Fourth Proportional to 117,809.67, 162,580.81 and 64,098.15

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Solution

The fourth proportional to 117,809.67, 162,580.81 and 64,098.15 is: 88,457.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,809.67 : 162,580.81 = 64,098.15 : x
  2. Step 2: Convert to fraction form
    117,809.67/162,580.81 = 64,098.15/x
  3. Step 3: Cross multiply
    117,809.67x = 162,580.81 × 64,098.15
  4. Step 4: Simplify right side
    117,809.67x = 10,421,129,352.48
  5. Step 5: Solve for x
    x = 10,421,129,352.48/117,809.67
  6. Step 6: Final answer
    x = 88,457.33

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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.