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Finding the Fourth Proportional to 35,459.60, 48,935.34 and 20,355.02

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Solution

The fourth proportional to 35,459.60, 48,935.34 and 20,355.02 is: 28,090.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,459.60 : 48,935.34 = 20,355.02 : x
  2. Step 2: Convert to fraction form
    35,459.60/48,935.34 = 20,355.02/x
  3. Step 3: Cross multiply
    35,459.60x = 48,935.34 × 20,355.02
  4. Step 4: Simplify right side
    35,459.60x = 996,079,824.41
  5. Step 5: Solve for x
    x = 996,079,824.41/35,459.60
  6. Step 6: Final answer
    x = 28,090.55

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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.