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Finding the Fourth Proportional to 117,745.65, 162,477.36 and 66,748.32

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Solution

The fourth proportional to 117,745.65, 162,477.36 and 66,748.32 is: 92,106.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,745.65 : 162,477.36 = 66,748.32 : x
  2. Step 2: Convert to fraction form
    117,745.65/162,477.36 = 66,748.32/x
  3. Step 3: Cross multiply
    117,745.65x = 162,477.36 × 66,748.32
  4. Step 4: Simplify right side
    117,745.65x = 10,845,090,818.04
  5. Step 5: Solve for x
    x = 10,845,090,818.04/117,745.65
  6. Step 6: Final answer
    x = 92,106.08

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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.