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Finding the Fourth Proportional to 201,863.90, 278,604.93 and 117,030.02

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Solution

The fourth proportional to 201,863.90, 278,604.93 and 117,030.02 is: 161,520.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,863.90 : 278,604.93 = 117,030.02 : x
  2. Step 2: Convert to fraction form
    201,863.90/278,604.93 = 117,030.02/x
  3. Step 3: Cross multiply
    201,863.90x = 278,604.93 × 117,030.02
  4. Step 4: Simplify right side
    201,863.90x = 32,605,140,530.00
  5. Step 5: Solve for x
    x = 32,605,140,530.00/201,863.90
  6. Step 6: Final answer
    x = 161,520.41

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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.