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Finding the Fourth Proportional to 12,444,918,999.30, 18,667,378,498.95 and 12,444,918,999.30

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Solution

The fourth proportional to 12,444,918,999.30, 18,667,378,498.95 and 12,444,918,999.30 is: 18,667,378,498.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,444,918,999.30 : 18,667,378,498.95 = 12,444,918,999.30 : x
  2. Step 2: Convert to fraction form
    12,444,918,999.30/18,667,378,498.95 = 12,444,918,999.30/x
  3. Step 3: Cross multiply
    12,444,918,999.30x = 18,667,378,498.95 × 12,444,918,999.30
  4. Step 4: Simplify right side
    12,444,918,999.30x = 232,314,013,348,707,172,352
  5. Step 5: Solve for x
    x = 232,314,013,348,707,172,352/12,444,918,999.30
  6. Step 6: Final answer
    x = 18,667,378,498.95

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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.