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Finding the Fourth Proportional to 117,447.51, 162,075.32 and 66,459.32

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Solution

The fourth proportional to 117,447.51, 162,075.32 and 66,459.32 is: 91,712.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,447.51 : 162,075.32 = 66,459.32 : x
  2. Step 2: Convert to fraction form
    117,447.51/162,075.32 = 66,459.32/x
  3. Step 3: Cross multiply
    117,447.51x = 162,075.32 × 66,459.32
  4. Step 4: Simplify right side
    117,447.51x = 10,771,414,413.31
  5. Step 5: Solve for x
    x = 10,771,414,413.31/117,447.51
  6. Step 6: Final answer
    x = 91,712.58

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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.