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Finding the Fourth Proportional to 85,283.68, 117,690.60 and 47,043.04

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Solution

The fourth proportional to 85,283.68, 117,690.60 and 47,043.04 is: 64,918.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,283.68 : 117,690.60 = 47,043.04 : x
  2. Step 2: Convert to fraction form
    85,283.68/117,690.60 = 47,043.04/x
  3. Step 3: Cross multiply
    85,283.68x = 117,690.60 × 47,043.04
  4. Step 4: Simplify right side
    85,283.68x = 5,536,523,603.42
  5. Step 5: Solve for x
    x = 5,536,523,603.42/85,283.68
  6. Step 6: Final answer
    x = 64,918.91

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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.