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Finding the Fourth Proportional to 117,368.73, 161,966.35 and 66,374.74

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Solution

The fourth proportional to 117,368.73, 161,966.35 and 66,374.74 is: 91,595.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,368.73 : 161,966.35 = 66,374.74 : x
  2. Step 2: Convert to fraction form
    117,368.73/161,966.35 = 66,374.74/x
  3. Step 3: Cross multiply
    117,368.73x = 161,966.35 × 66,374.74
  4. Step 4: Simplify right side
    117,368.73x = 10,750,474,655.43
  5. Step 5: Solve for x
    x = 10,750,474,655.43/117,368.73
  6. Step 6: Final answer
    x = 91,595.73

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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.