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Finding the Fourth Proportional to 35,459.47, 48,930.48 and 20,348.52

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Solution

The fourth proportional to 35,459.47, 48,930.48 and 20,348.52 is: 28,078.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,459.47 : 48,930.48 = 20,348.52 : x
  2. Step 2: Convert to fraction form
    35,459.47/48,930.48 = 20,348.52/x
  3. Step 3: Cross multiply
    35,459.47x = 48,930.48 × 20,348.52
  4. Step 4: Simplify right side
    35,459.47x = 995,662,667.40
  5. Step 5: Solve for x
    x = 995,662,667.40/35,459.47
  6. Step 6: Final answer
    x = 28,078.89

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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.