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Finding the Fourth Proportional to 136,656.70, 205,023.45 and 66,538.30

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Solution

The fourth proportional to 136,656.70, 205,023.45 and 66,538.30 is: 99,826.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,656.70 : 205,023.45 = 66,538.30 : x
  2. Step 2: Convert to fraction form
    136,656.70/205,023.45 = 66,538.30/x
  3. Step 3: Cross multiply
    136,656.70x = 205,023.45 × 66,538.30
  4. Step 4: Simplify right side
    136,656.70x = 13,641,911,823.14
  5. Step 5: Solve for x
    x = 13,641,911,823.14/136,656.70
  6. Step 6: Final answer
    x = 99,826.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.