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Finding the Fourth Proportional to 38,829.60, 58,258.80 and 15,472.80

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Solution

The fourth proportional to 38,829.60, 58,258.80 and 15,472.80 is: 23,214.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,829.60 : 58,258.80 = 15,472.80 : x
  2. Step 2: Convert to fraction form
    38,829.60/58,258.80 = 15,472.80/x
  3. Step 3: Cross multiply
    38,829.60x = 58,258.80 × 15,472.80
  4. Step 4: Simplify right side
    38,829.60x = 901,426,760.64
  5. Step 5: Solve for x
    x = 901,426,760.64/38,829.60
  6. Step 6: Final answer
    x = 23,214.94

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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.