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Finding the Fourth Proportional to 136,902.80, 205,351.32 and 63,030.80

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Solution

The fourth proportional to 136,902.80, 205,351.32 and 63,030.80 is: 94,544.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,902.80 : 205,351.32 = 63,030.80 : x
  2. Step 2: Convert to fraction form
    136,902.80/205,351.32 = 63,030.80/x
  3. Step 3: Cross multiply
    136,902.80x = 205,351.32 × 63,030.80
  4. Step 4: Simplify right side
    136,902.80x = 12,943,457,980.66
  5. Step 5: Solve for x
    x = 12,943,457,980.66/136,902.80
  6. Step 6: Final answer
    x = 94,544.87

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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.