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Finding the Fourth Proportional to 18,684,803.60, 28,027,205.40 and 11,000,560.40

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Solution

The fourth proportional to 18,684,803.60, 28,027,205.40 and 11,000,560.40 is: 16,500,840.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684,803.60 : 28,027,205.40 = 11,000,560.40 : x
  2. Step 2: Convert to fraction form
    18,684,803.60/28,027,205.40 = 11,000,560.40/x
  3. Step 3: Cross multiply
    18,684,803.60x = 28,027,205.40 × 11,000,560.40
  4. Step 4: Simplify right side
    18,684,803.60x = 308,314,965,845,906.12
  5. Step 5: Solve for x
    x = 308,314,965,845,906.12/18,684,803.60
  6. Step 6: Final answer
    x = 16,500,840.60

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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.