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Finding the Fourth Proportional to 58,274.81, 80,350.45 and 39,886.79

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Solution

The fourth proportional to 58,274.81, 80,350.45 and 39,886.79 is: 54,996.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,274.81 : 80,350.45 = 39,886.79 : x
  2. Step 2: Convert to fraction form
    58,274.81/80,350.45 = 39,886.79/x
  3. Step 3: Cross multiply
    58,274.81x = 80,350.45 × 39,886.79
  4. Step 4: Simplify right side
    58,274.81x = 3,204,921,626.71
  5. Step 5: Solve for x
    x = 3,204,921,626.71/58,274.81
  6. Step 6: Final answer
    x = 54,996.69

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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.