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Finding the Fourth Proportional to 12,384,455.40, 18,541,253.70 and 12,384,455.40

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Solution

The fourth proportional to 12,384,455.40, 18,541,253.70 and 12,384,455.40 is: 18,541,253.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,384,455.40 : 18,541,253.70 = 12,384,455.40 : x
  2. Step 2: Convert to fraction form
    12,384,455.40/18,541,253.70 = 12,384,455.40/x
  3. Step 3: Cross multiply
    12,384,455.40x = 18,541,253.70 × 12,384,455.40
  4. Step 4: Simplify right side
    12,384,455.40x = 229,623,329,507,734.97
  5. Step 5: Solve for x
    x = 229,623,329,507,734.97/12,384,455.40
  6. Step 6: Final answer
    x = 18,541,253.70

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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.