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Finding the Fourth Proportional to 18,723,905.40, 26,248,857 and 18,723,905.40

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Solution

The fourth proportional to 18,723,905.40, 26,248,857 and 18,723,905.40 is: 26,248,857

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723,905.40 : 26,248,857 = 18,723,905.40 : x
  2. Step 2: Convert to fraction form
    18,723,905.40/26,248,857 = 18,723,905.40/x
  3. Step 3: Cross multiply
    18,723,905.40x = 26,248,857 × 18,723,905.40
  4. Step 4: Simplify right side
    18,723,905.40x = 491,481,115,326,127.75
  5. Step 5: Solve for x
    x = 491,481,115,326,127.75/18,723,905.40
  6. Step 6: Final answer
    x = 26,248,857

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.