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Finding the Fourth Proportional to 136,693.40, 205,040.10 and 136,693.40

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Solution

The fourth proportional to 136,693.40, 205,040.10 and 136,693.40 is: 205,040.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,693.40 : 205,040.10 = 136,693.40 : x
  2. Step 2: Convert to fraction form
    136,693.40/205,040.10 = 136,693.40/x
  3. Step 3: Cross multiply
    136,693.40x = 205,040.10 × 136,693.40
  4. Step 4: Simplify right side
    136,693.40x = 28,027,628,405.34
  5. Step 5: Solve for x
    x = 28,027,628,405.34/136,693.40
  6. Step 6: Final answer
    x = 205,040.10

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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.