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Finding the Fourth Proportional to 117,370.94, 161,971.43 and 63,655.74

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Solution

The fourth proportional to 117,370.94, 161,971.43 and 63,655.74 is: 87,844.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,370.94 : 161,971.43 = 63,655.74 : x
  2. Step 2: Convert to fraction form
    117,370.94/161,971.43 = 63,655.74/x
  3. Step 3: Cross multiply
    117,370.94x = 161,971.43 × 63,655.74
  4. Step 4: Simplify right side
    117,370.94x = 10,310,411,235.51
  5. Step 5: Solve for x
    x = 10,310,411,235.51/117,370.94
  6. Step 6: Final answer
    x = 87,844.67

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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.