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Finding the Fourth Proportional to 20,347.61, 30,483.14 and 15,951.74

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Solution

The fourth proportional to 20,347.61, 30,483.14 and 15,951.74 is: 23,897.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.61 : 30,483.14 = 15,951.74 : x
  2. Step 2: Convert to fraction form
    20,347.61/30,483.14 = 15,951.74/x
  3. Step 3: Cross multiply
    20,347.61x = 30,483.14 × 15,951.74
  4. Step 4: Simplify right side
    20,347.61x = 486,258,891.49
  5. Step 5: Solve for x
    x = 486,258,891.49/20,347.61
  6. Step 6: Final answer
    x = 23,897.60

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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.