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Finding the Fourth Proportional to 136,007.10, 203,913.45 and 61,065.90

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Solution

The fourth proportional to 136,007.10, 203,913.45 and 61,065.90 is: 91,555.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,007.10 : 203,913.45 = 61,065.90 : x
  2. Step 2: Convert to fraction form
    136,007.10/203,913.45 = 61,065.90/x
  3. Step 3: Cross multiply
    136,007.10x = 203,913.45 × 61,065.90
  4. Step 4: Simplify right side
    136,007.10x = 12,452,158,346.36
  5. Step 5: Solve for x
    x = 12,452,158,346.36/136,007.10
  6. Step 6: Final answer
    x = 91,555.21

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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.