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Finding the Fourth Proportional to 38,708.78, 58,089.06 and 14,084.78

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Solution

The fourth proportional to 38,708.78, 58,089.06 and 14,084.78 is: 21,136.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,708.78 : 58,089.06 = 14,084.78 : x
  2. Step 2: Convert to fraction form
    38,708.78/58,089.06 = 14,084.78/x
  3. Step 3: Cross multiply
    38,708.78x = 58,089.06 × 14,084.78
  4. Step 4: Simplify right side
    38,708.78x = 818,171,630.51
  5. Step 5: Solve for x
    x = 818,171,630.51/38,708.78
  6. Step 6: Final answer
    x = 21,136.59

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1.5x scale

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.