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Finding the Fourth Proportional to 90,738.73, 136,135.73 and 46,396.63

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Solution

The fourth proportional to 90,738.73, 136,135.73 and 46,396.63 is: 69,609.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,738.73 : 136,135.73 = 46,396.63 : x
  2. Step 2: Convert to fraction form
    90,738.73/136,135.73 = 46,396.63/x
  3. Step 3: Cross multiply
    90,738.73x = 136,135.73 × 46,396.63
  4. Step 4: Simplify right side
    90,738.73x = 6,316,239,094.59
  5. Step 5: Solve for x
    x = 6,316,239,094.59/90,738.73
  6. Step 6: Final answer
    x = 69,609.08

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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.