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Finding the Fourth Proportional to 103,380.84, 142,665.66 and 58,668.84

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Solution

The fourth proportional to 103,380.84, 142,665.66 and 58,668.84 is: 80,963.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,380.84 : 142,665.66 = 58,668.84 : x
  2. Step 2: Convert to fraction form
    103,380.84/142,665.66 = 58,668.84/x
  3. Step 3: Cross multiply
    103,380.84x = 142,665.66 × 58,668.84
  4. Step 4: Simplify right side
    103,380.84x = 8,370,028,780.03
  5. Step 5: Solve for x
    x = 8,370,028,780.03/103,380.84
  6. Step 6: Final answer
    x = 80,963.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.