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Finding the Fourth Proportional to 22,653,612.12, 31,259,654.55 and 12,728,918.64

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Solution

The fourth proportional to 22,653,612.12, 31,259,654.55 and 12,728,918.64 is: 17,564,598.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,653,612.12 : 31,259,654.55 = 12,728,918.64 : x
  2. Step 2: Convert to fraction form
    22,653,612.12/31,259,654.55 = 12,728,918.64/x
  3. Step 3: Cross multiply
    22,653,612.12x = 31,259,654.55 × 12,728,918.64
  4. Step 4: Simplify right side
    22,653,612.12x = 397,901,599,481,455.81
  5. Step 5: Solve for x
    x = 397,901,599,481,455.81/22,653,612.12
  6. Step 6: Final answer
    x = 17,564,598.41

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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.